Questions on Geometry: Circles and their properties answered by real tutors!

Tutors Answer Your Questions about Circles (FREE)

Question 260986: What is the approximate area of a fourth of a circle with a radius of six inches?
Click here to see answer by rfer(12730)

Question 261538: What is the equation for the cirlce with endpoints of a diameter are (-4,3) and (6,-8)?
Click here to see answer by jsmallt9(3296)

Question 261758: If the tires on a car each have a diameter of 25 inches, how far will the car travel in 100 rotations of its tires?
Click here to see answer by jim_thompson5910(28717)

Question 261758: If the tires on a car each have a diameter of 25 inches, how far will the car travel in 100 rotations of its tires?
Click here to see answer by richwmiller(9144)

Question 261768: When Cammie finished making a friendship bracelet, it was 7.9 inches long. What was the diameter of the bracelet?
What formula would or should I use for this?
Do not understand.
Click here to see answer by unlockmath(1614)

Question 261886: A light in a parking lot illuminates a circular area 15 meters across. What is the area of the parking lot covered by the light?
A=pie * r^
A=3.14(7.5)
A=23.55 sq. meters
Is this right?
Click here to see answer by richwmiller(9144)

Question 262102: a sprinkler has a radius of 50 ft. what is the maximum circumference this sprinkler can cover?
Click here to see answer by Alan3354(31532)

Question 262105: mrs. micheals has installed a new more powerful sprinkler system, but the new system will go 20 meters farther then the old system. what is the circumference of the spraying area of the new system?
Click here to see answer by Alan3354(31532)

Question 262828: Find the equation of a circle: center(-2,0):passes through(2,0)
Click here to see answer by drk(1908)

Question 262981: There are two circles, one circle is inscribed and another circle is circumscribed over a square. What is the ratio of area of inner to outer circle?
Click here to see answer by ajmisra(4)

Question 263689: the spoke of a wheel reaches from the center of the wheel to the rim if the circumference of the rim of the wheel is 42 inches how long is each spoke round your answer to the nearest hundreth
Click here to see answer by JBarnum(2044)

Question 264452: What is the exact area of a circle with a diameter of 25 inches?
Click here to see answer by rfer(12730)

Question 264463: How many cubic inches of air can a fully inflated basketball hold if it's radius is 3.8 inches? Give the solution accurate to the nearest hundredth and include the units for the solution.
Thank you...
Click here to see answer by rfer(12730)

Question 264535: the line y=2x-8 meets the coordinate axes at A and B. the line AB is a diameter of the circle. find the equation of the line. please may you explain how you get to the answer aswell, thankyou!
Click here to see answer by Alan3354(31532)

Question 264546: the line y=2x-2 meets the circle (x-2)^2 + (y-2)^2 =20 at A and B. coordinates of A and B are, (0,-2) and (4,6). show that AB is a diameter of the circle. thank you would be so helpful if you could help, showing how you got the answer! thankyou
Click here to see answer by Alan3354(31532)

Question 264554: the line y=0 is a tangent to the circle (x-8)^2 + (y-a)^2=16. find the value of a. thank you so much!!
Click here to see answer by Alan3354(31532)

Question 264572: the circle, centre (p,q) radius 25, meets the x axis at (-7,0) and (7,0) where q>o.
find the value of p and q
find the coordinates of the points where the circle meets the y axis
THANK YOU SO MUCH IF YOU CAN HELP!!
Click here to see answer by Theo(3504)

Question 264639: what is the circumference og a circle whith a radiose of 5cm

Click here to see answer by checkley77(12569)

Question 265032: the points A (-4,0), B(4,8) and C(6,0) lie on a circle. the lines AB and BC are chords of the circle. find the coordinates of the centre of the circle. thank you so much if you could help!!
Click here to see answer by josmiceli(9817)

Question 265649: how do i find the radius of a circle that has a circumference of 69.115?
Click here to see answer by solver91311(17077)

Question 265915: Six points are placed on a circle. What is the greatest number of different lines that can be drawn so that each line passes through two of these points?
(A) 12 (B) 15 (C) 25 (D) 30 (E) 36
Click here to see answer by Edwin McCravy(8999)

Question 265961: A circular pool has a radius of 10 meters. Rounded to the nearest square meter, what is the area of the pool?

Click here to see answer by Alan3354(31532)

Question 266072: If the tires on a car each have a diameter of 25 inches, how far will the car travel in 100 rotations of its tires?
Click here to see answer by Alan3354(31532)

Question 266562: an ice cream cone has a radius of 2cm and a height of 7cm,what is the volume?
Click here to see answer by drk(1908)

Question 266566: if a circle has an area of 94.985in squared,what is the radius?
Click here to see answer by Alan3354(31532)

Question 266569: if a trampoline has a radius of 6.5 feet how much fencing is needed to go around the circumference
Click here to see answer by drk(1908)

Question 266969: This is a three part question. I wasn't too sure where to post it, so I posted the question here.
Given the equation of the circle, label the center and radius of the circle.
A) X^2 + 2x + y^2 + 10y - 23 = 0

B) X^2 + 4X + y^2 - 12y = 24

C) X^2 + 10X + y^2 - 11 = 0

Click here to see answer by Edwin McCravy(8999)

Question 267167: what is a circle inscribed in a regular polygon
Click here to see answer by Alan3354(31532)

Question 267155: what is the area of an ellipse with the major axis 20m and the minor axis 10m?
Click here to see answer by drk(1908)

Question 268667: Hello, I am in a calculus course, and I am having difficulty solving this problem:
Consider the circle C1: (x-1)^2+y^2=1, and the circle C2: x^2+y^2=r^2. For small r values, the circles intersect. Consider the line that goes through the top of C2 and the intersection point in quadrant 1. As r->0, where does the root of the line tend to?
Thank you for the help!
J
Click here to see answer by drk(1908)

Question 269417: if segment ac is perpendicular to segment bd and bd=26, find gd.
Click here to see answer by JBarnum(2044)

Question 269763: The radius of a sphere is measured to be 9 inches, while its true length is 807 inches.
Find the percent of error in:
a. the linear measure rounded to the nearest tenth
B. the volume rounded to the nearest tenth
Click here to see answer by Alan3354(31532)

Question 269955: The bottom of a ladder is 6 feet from the base of a building. It is a 20 foot ladder. How far can it reach?
I am struggling to solve this problem. We'll someone please help me?
Click here to see answer by Alan3354(31532)

Question 269958: A circle has an area of 25 pie sqaure centimeters. What is the length of its diameter?
If someone could answer this question for me, that would be great! Thanks.
Click here to see answer by rfer(12730)

Question 270582: What is the number Pi square units in the area of a circle the longest chord of which is 2 units?
Click here to see answer by stanbon(57969)

Question 270754: If line AC is tangent to circle O at point B , OC=65 and BC=60,What is the area of the square that would circumscribe the circle
(heres a link to a diagram if you need it)
http://www2.edmastery.com/files/nnds_prod_data/itemAssets/nnds_li%20-%20production%5Cjalberth%5C102.JPG
Click here to see answer by solver91311(17077)

Question 270898: how do you solve pi?
Click here to see answer by papugai(18)

Question 271014: In circle C, QR is a diameter, and Q(1,8) and C(3.5, 2) are points on a
coordinate plane.
Find and state the coordinates of point R.
Click here to see answer by solver91311(17077)

Question 271029: Please help me solve this problem -
The circumference of a light pole is about 25 inches. What is its diameter? I think it is about 12.5 in.
What is its radius?
Thank you for helping me.
Click here to see answer by drk(1908)

Question 270996: Find a general form of an equation of the line that is tangent to the circle at the point P.
x 2 + y 2 = 100; P ( 8, 6 )
Click here to see answer by drk(1908)

Question 271016: In triangle ACD, E is a point on segment AD and B is a point on segment AC , such that segment EB is parallel to segment DC.
If AE = 3, ED = 6, and DC = 15, find the length of segment EB.
Click here to see answer by Earlsdon(6294)

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