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Tutors Answer Your Questions about Circles (FREE)
Question 168331: Need help on this proof, please.
I have to write reasons for the statements of the proof.
GIVEN: linePS and lineQT are chords intersecting at R.
PROVE: triangleQRP is similiar to triangleSRT.
STATEMENTS
1. line PS and lineQT are chords intersecting at R. 1. Given.
2. angleQPS is congruent to angleSTQ and anglePQT 2. ????
is congruent to angleTSP. 3. ????
3. triangleQRP is similiar to triangleSRT.
I just need the reasons for numbers 2 and 3. Thanks a bunch!
Click here to see answer by stanbon(26268)   |
Question 168809: the question in my math book is 1/4 of out of a circle they are asking me to find the perimeter and the area the lenght of this 1/4 is 3cm the answer in the back of the book gives 10.71 for the perimeter and 7.065 for the area what are the steps that i need to take to come up with these two answers
Click here to see answer by ankor@dixie-net.com(6693)  |
Question 169792: A building is constructed over a circular pond. The ratio from the longest side of the rectangular building is 4:3 and the perimeter is 280 units. The edge of the pond is 4 units beyond each corner of the building on the diagonal when viewed in an aerial photo. The building owners plan to put water plants in the area of the pond that will recieve sunlight at noon. The plants caost $1.25 each and require a surface area of 30 square units to be healty when mature. What is the total cost of the plants neede to cover the available area?
Click here to see answer by stanbon(26268) |
Question 177346: A radius square is inscribed in a circle. The area of the square is 64 square centimeters. Determine the area of the shaded portion of the circle.
Here are some hints:
If the area of the square is 64 square centimeters, what is the measure of each side of the square?
How might you use the measurement of the sides of the square to determine the diameter (or radius) of the circle?
How will knowing the measure of the diameter (or radius) of the circle help you determine the area of the shaded region?
Click here to see answer by gonzo(654) |
Question 177346: A radius square is inscribed in a circle. The area of the square is 64 square centimeters. Determine the area of the shaded portion of the circle.
Here are some hints:
If the area of the square is 64 square centimeters, what is the measure of each side of the square?
How might you use the measurement of the sides of the square to determine the diameter (or radius) of the circle?
How will knowing the measure of the diameter (or radius) of the circle help you determine the area of the shaded region?
Click here to see answer by Fombitz(2113)  |
Question 178990This question is from textbook
: I need help on finding the center and radius in general form on 9x^2+9y^2-6y-17=0. And i would like to see it completely broke down step-by-step. As far as I got was (9x^2+ )+(9y^2-6y+ )=0. I don't understand how you find the other numbers. This question is from textbook
Click here to see answer by Mathtut(3670) |
Question 182406: The real-life train that Joe modeled his train set after crosses a circular pond with radius of 20.5 feet. How big of a circle should Joe draw to represent this pond in his model train set, if he is to stay consistent with the 1:12 ration?
I actually got the answer 3.4, which I think is right. It's the question after it that is confusing.
If it takes Joe's train about 7 seconds to traverse the pond in his model set, what is a good approximation of how long it would take the real-life train to cross the real pond.
I got 84.4 seconds but, again, I'm not sure if that is right.
Click here to see answer by solver91311(5072)  |
Question 182426This question is from textbook McDougal Littell Geometry
: From your perspective of the Earth during a total eclipse of the sun, the moon is directly in line with the sun and blocks the sun's rays. The ratio of the radius of the moon to its distance to Earth is about the same as the ratio of the radius to the sun to its distance to Earth.
Distance between Earth and the moon: 240,000 miles
Distance between Earth and the sun: 93,000,000
Radius of the sun: 432,500 miles
I have to make a sketch of the Earth, the moon, and the sun during a total eclipse of the sun. But the sketch should contain some similar triangles which is the part I get lost on. I get the drawing and not the triangles. Can someone please give me an idea of what to do so I can answer how to use similar triangles in my sketch to explain a total eclipse of the sun?This question is from textbook McDougal Littell Geometry
Click here to see answer by solver91311(5072) |
Question 184480: help please:don't know where to start
3 points A(3,1, B(-1,-11) and C (-5,9) nd circle that passes through them.
slope of line AB
cordinate of mid point that passes through AB
equation of perpidicular bisector of AB(1)
show that the line corresponding to parametiic equations x=t-14,y=-1/3t is same as 1 above
perpendicular bisector of line segment AC
centre of circle through A,B and c
equation of the circle
Click here to see answer by Alan3354(6079)  |
Question 185682: The directions state: For each problem, draw a picture to help solve the problem.
the question: A circle witht the radius x-2 produces an area of 169pi cm power 2. Find x.
I drew a circle deplicting radius x-2. I solved for x with
A= 169pi cm power 2
x= sq root 169 + 2
x = 13 + 2
x = 15
Did I do this correctly?
Thank for you time
Click here to see answer by stanbon(26268) |
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