Questions on Geometry: Geometric formulas answered by real tutors!

Tutors Answer Your Questions about Geometric formulas (FREE)

Question 473077: using the midpoint formula, find the coordinates of the midpoint of the segment whose endpoints are given:
1) E(4,-4), F(1,7)
2) G(2,9), H(-3,6)
3) I(-8,3), J(3,0)
Click here to see answer by stanbon(75887)

Question 473275: How to find d in simplest radical form in a right circular cone shape that has a radius of 3 and height of 3 and letter d outside the cone. Thanks in advance.
a. sq root 6
b. 3 sq root of 2
c. 18
d. 6
Click here to see answer by jim_thompson5910(35256)

Question 473394: Let me ask this Why is it that John on this site tends to be a real prick???? My mother is new to math and she asks a question you respond with something like HELLO can i get my crystal ball??? Look ass hole maybe some of us are not as talented as you in this field okay give some of us a break. Its sad that when people need help your going to be an ass hole to them. If you cant help leave and don't its that simple!
Click here to see answer by stanbon(75887)

Question 473772: According to the U. S. Census Bureau, the total 2008 U.S. population was 303,824,640. The chart below summarizes the 2008 population for five U.S. States.
U. S. State 2008 Population
Missouri 5,911,605
Pennsylvania 12,448,279
Tennessee 6,214,888
Utah 2,736,424
Washington 6,549,224

SOURCE: U. S. Census Bureau

What is the probability that a randomly selected U.S. resident did not live in Pennsylvania? Show step by step work. Round solution to the nearest thousandth
Click here to see answer by richard1234(7193)

Question 474669: Can a triangle be formed with sides 2, 3, and 6 centimters? Why or why not?
I set this up as pythagorean theorem
a2 + b2 = c2
2'2 + 3'2 = 6'2
4 + 9 = 36
Would the answer would be No a triangle can not be formed?
Click here to see answer by richard1234(7193)

Question 475545: A single die is rolled one time. Determine the probability of rolling a number greater than 3 or less than 5.
Click here to see answer by edjones(8007)

Question 477276: Plz help me someone! I'm having some issues in this class and its my last week!
Which pair has equally likely outcomes? List the letters of the two choices below which have equal probabilities of success, separated by a comma. A standard deck of cards has 12 face cards and four Aces (Aces are not face cards).
A. drawing a red seven out of a standard 52 card deck given it�s not a face card or an Ace.
B. drawing a five out of a standard 52 card deck given it�s not a face card or an Ace.
C. rolling a sum of 4 on two fair six sided dice
D. rolling a sum of 5 on two fair six sided dice
E. rolling a sum of 7 on two fair six sided dice
Click here to see answer by stanbon(75887)

Question 2653: I have a square each side is h and then there is two semi cirlcles 1 on each end of the square the radius is r what is the formula for this area?
Click here to see answer by cleomenius(959)

Question 2876: Find the area of a parallelogram with side lengths of 8 and 14 feet and an interior angle measure of 40 degrees.
Click here to see answer by cleomenius(959)

Question 3164: What is the formula for the area of a trapezoid?
Click here to see answer by cleomenius(959)

Question 3170: The area of a triangle is 36 square meters. The height is two more than four times the base. Find the height and base.
GOT THIS FAR:
Let x = the base
Let 4x + 2 = the height
Let 36^ = area
x^2 + (4x+2)^2 = 36^2
Please help me. I am losing my mind.
Click here to see answer by cleomenius(959)

Question 3611: can you give me the formula to work out the hypotenuse when I only know 1 length & the three angles of the triangle
Click here to see answer by cleomenius(959)

Question 3675: what is the area of a triangle with a base = and a height =
Click here to see answer by cleomenius(959)

Question 3926: Tue. 6/21/05
Frequently in the course of my job as an electrical estimator, I must determine the height of existing parking lot light poles from the ground. Given the fact that I cannot physically measure a standing pole from the ground (it could be 35 - 40' tall), shouldn't I be able to accurately determine the height of a light pole from the ground, using trigonometry? For example, can I measure off 20' along the ground and assume a Right Triangle with the pole being the adjacent side to solve the equation?
I am decidedly math handicapped and am looking for an easy and repeatable way to measure light poles from the ground. I am anxiously looking forward to your reply.
Best Regards,
Keith
Click here to see answer by cleomenius(959)

Question 4161: A circle has a circumference of 20(pi)meters. Sorry There is no key stroke for pi. Find the radius of the circle. Thanks.
Click here to see answer by cleomenius(959)

Question 4265: The height of a cylinder is four times its radius. Find a function that models the volume V of the cylinder in terms of its radius r. I know that V=pir^2h, but I don't understand how to write a function when the height of a cylinder is four times its radius. Thanks
Click here to see answer by cleomenius(959)

Question 4533: I have the formula for area for a circle, but no matter how many times I have tried I cannot get the correct answer. The answer is in the back of my book to check it, but I'm just not seeing how they are coming up with it. Please show me how to get the answer by example. Here is the problem: The diameter of the base of a pie is 9 inches. The diameter of the top of the pie tin is 12 inches. How many square inches of crust need to be prepared in order to create a crust on the bottom and top but not on the sides of a pie made in this tin? Thanks for your help.
Click here to see answer by cleomenius(959)

Question 4936: How do I find missing angle measures when I only have 1 angle measure such as 70 degrees or 25 degrees or 30 degrees?
Click here to see answer by cleomenius(959)

Question 5052: I have been given the volume of a cone, 100 in cubed. I need to find the function that models the height of the cone in terms of it's radius. Any help would be appreciated.
Click here to see answer by cleomenius(959)

Question 5754: I'm having trouble solving circumference ratios. The question is....
A boy rides his bicycle around a circular track that has a diameter of 76 ft. If a wheel of the bicycle spins exactly 48 times when going once around the track, what is the diameter of the wheel?
Write your answer in inches.
The answer key gives this formula to follow: n=D3.14/d3.14 =D/d
And here are the steps they made, but I don't know why they multiplied 76 by 12.
n=48
D=76=76*12=912
d=912/48=19
d=19inches

Click here to see answer by cleomenius(959)

Question 7370: problem:
the area of a circle is 25 meters. find the radius of the circle.
i solved to this point.
7.96 m (squared)= r (squared)
the books says answer is r=2.82
i need to understand the step on how they got the answer
thanks.
Click here to see answer by cleomenius(959)

Question 7440: please help me with this problem..
solve by any method.
3x-2y=-5
-3x-y=-1
Click here to see answer by cleomenius(959)

Question 12251: The wheels of a car have a 24-in. diameter. When the car is being driven so that the wheels make 10 revolutions per second, how far with the car travel in one minute?
Click here to see answer by cleomenius(959)

Question 17284: im not sure what the subject is in but i need live chat tutoring on the subject of what an invers a converse a contrapositive and stuff about a conditional statement. if you could help me ive searched forever for help and need it as quick as possible please help me thanks
Click here to see answer by cleomenius(959)

Question 20390: How do I find the centre of a circle ? I done this in high school, but that was 25 years ago, and now I just can't remember it.
Click here to see answer by cleomenius(959)

Question 26224: 4) CLASSIC PROBLEM - A traveling salesman (selling shoes) stops at a farm in the Midwest. Before he could knock on the door, he noticed an old truck on fire. He rushed over and pulled a young lady out of the flaming truck. Farmer Brown came out and gratefully thanked the traveling salesman for saving his daughter�s life. Mr. Brown insisted on giving the man an award for his heroism.
So, the salesman said, �If you insist, I do not want much. Get your checkerboard and place one penny on the first square. Then place two pennies on the next square. Then place four pennies on the third square. Continue this until all 64 squares are covered with pennies.� As he�d been saving pennies for over 25 years, Mr. Brown did not consider this much of an award, but soon realized he made a miscalculation on the amount of money involved.
a) How much money would Mr. Brown have to put on the 32nd square?

b) How much would the traveling salesman receive if the checkerboard only had 32 squares?

Calculate the amount of money necessary to fill the whole checkerboard (64 squares). How much money would the farmer need to give the salesman?

Thank you so, much for your help.
Click here to see answer by cleomenius(959)

Question 26332: how many conversation will there be at a party of 50 people. (each person only talk to each other once.)
Click here to see answer by cleomenius(959)

Question 26465: A rectangular garden is to be surrounded by a walkway of constant width. The gardens dimensions are 30 ft by 40 ft. The total area, garden plus walkway, is to be 1800 ft2. What must be the width of the walkway to the nearest thousandth?
I am unable to figure this problem out at all. If you could please help me I would greatly appreciate it!! Thank you!!
Click here to see answer by cleomenius(959)

Question 29496: the perimeter of a rectangle is 32m and the area of the rectangle is 55m squared. Find the dimensions of the rectangle
Click here to see answer by cleomenius(959)

Question 33487: A shape has 7 sides and 7 angles. The angles are 100,146,133,144,130, and x. What is the value of x in degrees?
Click here to see answer by cleomenius(959)

Question 33485: What is the length of Arc AB? The diameter goes from A to B and it is 180 degrees. The radius is 14 ft.(from A to the center)
Click here to see answer by cleomenius(959)

Question 37051: A circle with radius of square root of 2 units is circumscribed about a square with side length 2 units. Find the probability that a randomly chosen point will be inside the circle but outside the square
Click here to see answer by cleomenius(959)

Question 35913: Explain why a regular pentagon cannot tessellate a plane
Click here to see answer by cleomenius(959)

Question 478207: Hello,
I am interested in eventually being a tutor initially in geometry, and have been working on this site the last few days under the name Cleomenius.
I have come across a problem I would like to see if I can get a more clear understanding of.
The problem is, what would be the general formula for the following:
A square is inscribed in a circle.
What would be the general formula for the area of the circle that is not included in the square?
I know the formula for the area of the square and the area of the circle, and we would have to subtract the area of the square from the circle, but cannot seem to produce a general formula that makes any sense to me.
If you can help, I would appreciate it.
Thank you,
Barnabas Kalina.

Click here to see answer by stanbon(75887)

Question 474699: Ray SU bisects angle RST. The measure of angle RSU=3x-1, the measure of angle UST=2x+13 and the measure of angle RST=6x-2. Find x.
Click here to see answer by cleomenius(959)

Question 469249: I am having a problem understanding the steam and leaf problems. I'm trying to help my grandson. I have read the answers given on ixl on how to solve the problems but I'm missing something in the solution.
Click here to see answer by cleomenius(959)

Question 467849: Identify the regular n-gons that have both 12 degree and 20 degree rotational symmetry.

Thank you.

Paul Moore
Click here to see answer by cleomenius(959)

Question 464458: Given A = {1,2,3}, B = {1,2,3,4,5}, and C = { 4, 5, 6, 7}. Evaluate each set
a) A ∩ B
b) A U C
c) B U C
d) (A U B) ∩ C
e) A U (B U C)
f) (A ∩ B) ∩ C
g) (A ∩ B) U C

Click here to see answer by cleomenius(959)

Question 463993: Find D in the simplest radical form. Right square pyramid with equilateral trianglar faces. The sides and base are all 8. d is in the middle of the pyramid with a dotted line down the middle. I am just super confused on how to do this problem. I have tried to find the formula in my textbook but can't figure it out. Thank you
Click here to see answer by cleomenius(959)

Question 459104: Find the width of a rectangle with a diagonal of 17 cm and a length of 15 cm? Using pythagorean theorem.
Click here to see answer by cleomenius(959)

Question 455516: If the width of a rectangle is set at 14 cm, what lengths will make the perimeter greater than 86 cm?
Click here to see answer by cleomenius(959)

Question 454565: 5x^5 � 45x^4 + 35x^3 factor the problem completely
Click here to see answer by cleomenius(959)

Question 453182: find the length and midpoint of AB. simplify any square roots.
A(-7,3) B(4,1)

Click here to see answer by cleomenius(959)