Tutors Answer Your Questions about Surface-area (FREE)
Question 719533: Hi!
I am going to take advantage of your 5 problem limit. I am currently enrolled in Pre-Ap Geometry and I am going over circles.
My first problem is:
Ok, on my paper it shows a circle and most of the circle is shaded and it had a radius of 6. The arc = 78 degrees. How do I find the arc length and the area of the shaded region?
Click here to see answer by josgarithmetic(39617)  |
Question 719548: a piece of wire that has been bent in the form of a semicircle including the bounding diameter is straightened and then bent in the form of a square.diameter of semicircle is 14cm.which has larger are semicircle or square?and by what difference.
ans.i have tried this way..area of circle(1/2 pi r square with 7 as radius.)
and taken the side of the square as 14 cm is it correct.what no should i use for side of the square?
Click here to see answer by mananth(16946)  |
Question 721031: The problem is stated below.
For the area LW=800, I isolated L, which is L=(800/W).
Then I plugged this into the perimeter equation
P=2(800/W)+2W -> P=(1600/W)+2W -> P=1600+2W^2
Then, derivative = 4W. But when I set the derivative to equal 0, W=0 which doesn't make sense.
I'm not sure where my error is. Could you please show me how you would solve it. Thanks in advance!
Here is the problem: "A rectangular field is to have an area of 800 m^2 and is to be surrounded by a fence. The cost of the fence is 12 dollars per meter of length. What is the minimum cost this can be done for?"
$________
Click here to see answer by josgarithmetic(39617) |
Question 720590: Find the dimensions of the smallest rectangle that would completely contain the Norman window with 4ft lenght and 3ft width. Also find the area of the "leftover" rectangle created by cutting the Norman window from the rectangle.
Click here to see answer by fayefaye2013(1) |
Question 721326: could you help me find the area of 4 radical 3 over 3? here is my work so far and i don't know if it is the right answer: 3*4*4 radical 3 over 3 divided by 2 and i got 24 as my answer. can you help me please and thank you.
Click here to see answer by stanbon(75887) |
Question 721456: I son asked me to help him with his homework, he missed that day of school and it has to be turned in tomorrow. I do not remember how to do it. I am totally lost, please help me. If you could show me how to do this I can show him. The problem states:
Find the area of each.
Then it has a picture of a circle with a dot in the middle. The dot in the middle has a line going from it to the bottom right side of the circle. (If it was a clock it would look like it was at five o'clock), but anyways the line has 14 km beside it. I do not have a clue how to begin to do this problem, please help.
Click here to see answer by Alan3354(69443)  |
Question 721462: I missed this day of school and do not know how to figure out the answer. Can someone please help me with this problem. I have to know how to do it and have it turned in by tomorrow.
The problem states, "Find the area of each"
It is a triangle with a dotted line going down the middle of it. This line has 6 ft. beside of it. The top left of the triangle has 8 ft. on it. The bottom of the triangle has 11 ft. Can someone help me please.
Click here to see answer by ankor@dixie-net.com(22740)  |
Question 721468: I missed a day of school and my teacher gave me this huge packet of math papers and told me I have to have it done by Monday. I do not know how to do them. Can someone please show me. We have a test coming up and I need to know.
Find the value of x in each pair of similar figures.
The problem show a picture of two triangles, one big and one little. On the little one it has a A at the top and it goes down to a B. The base is located at the B. On the outside of the line from A to B it has 3 ft. Then from B to C it states 4 ft. The big triangle looks the same but D is where A was and E is where B was. From D to E it states it is 6 ft. Then from E to F, this is where B to C was, it has a x.
Can someone please help me.
Click here to see answer by josgarithmetic(39617) |
Question 721930: What is the area of a 2 semicircles which are both 13 meters
A triangle which is 12 m and another semicircle which is 10 m
The answer should be 232.0 m
I dont knnow how to do the work cuz my friend gave me the answer and we have to show our work
Click here to see answer by Alan3354(69443) |
Question 722866: I am trying to assist my son who has a C grade in Ontario Canada Grade 6 Math :(
We were doing just fine until we came across this question and my Googling has gotten me no where.
The question is to determine the length and width of a square with an area of 36 square cm.
The answer is 6 cm each side but how do I teach him a formula to help him?
The same will of course end applying to determining formulas for rectangles, parallelograms and triangles.
Any research so far has the same stuff.
They teach how to determine the area with one unknown or both sides known but not with both unknown.
I feel like a dummy for not being able to help him.
I am 54 years old and I cannot figure this?
Sad it is so I beseech your assistance.
he is a good lad and has shown great marks before.
I fear I have been negligent in not following his progress previously.
He is keen to learn and is excited that I am helping.
He knows I am looking for an answer and is patient.
I thank you for taking the time to help us.
Sincerely
Wm. Makort
Click here to see answer by josgarithmetic(39617) |
Question 722866: I am trying to assist my son who has a C grade in Ontario Canada Grade 6 Math :(
We were doing just fine until we came across this question and my Googling has gotten me no where.
The question is to determine the length and width of a square with an area of 36 square cm.
The answer is 6 cm each side but how do I teach him a formula to help him?
The same will of course end applying to determining formulas for rectangles, parallelograms and triangles.
Any research so far has the same stuff.
They teach how to determine the area with one unknown or both sides known but not with both unknown.
I feel like a dummy for not being able to help him.
I am 54 years old and I cannot figure this?
Sad it is so I beseech your assistance.
he is a good lad and has shown great marks before.
I fear I have been negligent in not following his progress previously.
He is keen to learn and is excited that I am helping.
He knows I am looking for an answer and is patient.
I thank you for taking the time to help us.
Sincerely
Wm. Makort
Click here to see answer by DrBeeee(684) |
Question 723814: In a garden . there are 10 rows and 12 coloumns of mango trees . The distance between the two trees is 2 metres and a distance of 1m is left from all sides of the boundary of the garden . Find the length of the garden .
Click here to see answer by KMST(5328)  |
Question 724380: Pamela has a garden 10 m by 17 m. She uses part of it for a badminton court which is inthe shape of a rectangle by subtracting equal amounts from both the length and the width. The area of the garden is now 92 sq. meters. Find the dimensions of the badminton court. Please Help. I have no idea how to set this up.
Click here to see answer by mananth(16946) |
Question 726749: If the length of one side of a square is tripled and the length of an adjacent side is increased by 10, the resulting rectangle has an area that is 6 times the area of the original square. Find the length of a side of the original square.
Click here to see answer by DrBeeee(684) |
Question 727729: A can has a height of 5.5 inches and a radius of 2.2 inches. A label needs to be placed on the can so that it wraps around the can exactly once with no overlap. What would be the surface area of the label? Use 3.14 for pi. Please help!! I'm unsure of what formula to use.
Click here to see answer by josmiceli(19441)  |
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