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

Tutors Answer Your Questions about Circles (FREE)

Question 271134: The circumference of a circle is 1, find the central angle corresponding to the arc which 2/5 long.
Click here to see answer by Greenfinch(383)

Question 271145: can you please help me to solve this question?
a wire is bent into a circular shape its circumfrence is 88cm. find its radius and area. if the wire is bent into a square, what will each side measure? which shape encloses more area??
plz plz plz help
Click here to see answer by Greenfinch(383)

Question 271646: the diameter of a circular glass frame is 84cm. a 2cm wide metallic border is outside it. find the cost of metal required for bordering the glass frame at Rs.30 per square cm.
Click here to see answer by mananth(12270)

Question 272226: the wall of a circular fountain has to be decorate by linking lengths of chains around the wall each length of the chains measures 5.5 feet.if the outer diameter of the fountain wall is 28 feet , how many lengths of the chains are required for the decoration?
A 16 b 32 c 48 d 96 e 448

Click here to see answer by Theo(3464)

Question 272409: a diameter of 16 centimeter has what radius
Click here to see answer by oberobic(2304)

Question 272560: Find the equation of the circle that has its center at (1,2) and that passes through the origin.
Click here to see answer by Alan3354(30993)

Question 272729: If a chord 10 inches long is 5 inches from the center of a circle, what is the radius of the circle(sqaure root answer)?
In a circle with a 12-inch radius, what is the length of a segment joining the midpoint of a 20-inch chord and the center of the circle(square rootanswer)?
What is the radius of a circle in which an inscribed square has a side of 8 inches(square root answer)
Click here to see answer by ankor@dixie-net.com(15660)

Question 273256: If measures 135, what is the length of the radius of this circle? Round your answer to two decimal places.

Click here to see answer by Theo(3464)

Question 273748: Circle G has a radius of 22 centimeters. Chord HI is 3 centimeters from the center. What is the length of HI in centimeters?
Click here to see answer by Alan3354(30993)

Question 273749: Circle E has a radius which is the SQUARE ROOT of 257 meters. Chord MT measures 32 meters. How far is MT from the center in meters?
Click here to see answer by solver91311(16897)

Question 274211: Diameter of a circle. If the diameter of a circle is
1.3*10^12 meters, then what is its radius?

Click here to see answer by Alan3354(30993)

Question 274171: Will a circle with a radius of 4 inches fit inside a circle with a diameter of 5 inches? Explain your answer please.
Click here to see answer by edjones(7569)

Question 274512:
Click here to see answer by chashmish(8)

Question 274512:
Click here to see answer by richwmiller(9143)

Question 274809: If the radius of a circular region were decreased by 20 percent, the area of the circular region would decrease by what percent?
A 16% b 20% c 36% d 44%

Click here to see answer by dabanfield(803)

Question 275304: how do I find the area of a donut when I only have the radius of the outer circle? Radius is 10 and inner is ?
Click here to see answer by dabanfield(803)

Question 275304: how do I find the area of a donut when I only have the radius of the outer circle? Radius is 10 and inner is ?
Click here to see answer by richwmiller(9143)

Question 275550: find the center and radius of each circle whose equation is given.
(x*x)+(y*y)+4x-8=0
Click here to see answer by stanbon(57387)

Question 275692: Esther and Jim plan to add a pond to their property. The area of the pond is 44 square meters. What is the radius?
Click here to see answer by checkley77(12569)

Question 275862: A certain large city has a circular road around the city and a road directly through downtown. The speed limit on the circular road is 65mph and the speed limit through downtown is 35mph. If the road through downtown is 20 miles long, how long, to the nearest minute, will it take to travel each route?
Click here to see answer by richwmiller(9143)

Question 276134: Find the radius of the circle (picture included).

Click here to see answer by Alan3354(30993)

Question 276256: A certain large city has a circular road around the city and a road directly through downtowm. The speed limit on the cicrular road is 65 mph and the speed limit through downtown is 35 mph. If the road through downtown is 20 miles long, how long, to the nearest minute, will it take to travel each route?
Click here to see answer by solver91311(16897)

Question 270898: how do you solve pi?
Click here to see answer by Alan3354(30993)

Question 276398: This question involves spheres. How do you find a radius of a sphere if for example the sphere was the earth
Click here to see answer by Alan3354(30993)

Question 276504: If the circumference of a circle is 4pie/3, then is half of it's area?
Click here to see answer by josmiceli(9697)

Question 276515: what is the area of a circle if the square of its radius is 64?
Click here to see answer by checkley77(12569)

Question 276830: a wheel has a radius of 14 in. approximately how far does a point on the wheel travel if it makes 15 complete revolutions? 22/7 for pi.
Click here to see answer by vleith(2825)

Question 276931: The circumference of a circle is 15π inches. Find the length of an arc of 90 degrees. Leave answer in terms of π.
Click here to see answer by unlockmath(1603)

Question 277152: The problem says Line t is tangent to the circle. Find the indicated measure.
Click here to see answer by solver91311(16897)

Question 277327: How do you find the radius of a circle that has a diameter of 39.25 cetimeters???
Click here to see answer by Jeff Gordon(65)

Question 277351:

- find x
Click here to see answer by ankor@dixie-net.com(15660)

Question 278218: Find the area to the nearest hundredth of a 10 degree sector in a circle with diameter of 12 centimeters.
Click here to see answer by Edwin McCravy(8909)

Question 278417: area of a circle with a radius of 15 millimeters rounded to the nearest tenth
Click here to see answer by stanbon(57387)

Question 278651: What is "X" when a circle has a angle in it showing 32 degrees?
Click here to see answer by Alan3354(30993)

Question 279029: The question is: what is the circumfrence of a circle if the radius is 5cm. I got 31.4 as my answer but that's not an answer on my homework (it's multiple choice.) Help!
Click here to see answer by vleith(2825)

Question 279341: If the circumference is 7.065 cm then what is the diameter and radius
Click here to see answer by rfer(12670)

Question 279628: x^2-2x-3=0
Click here to see answer by mananth(12270)

Question 280109: What is the area if an ellipse with the major axis 20 m and the minor axis 10 m? Round your answer to the nearest whole number

sue
Click here to see answer by Alan3354(30993)

Question 280329: Dear Sir, Please help me!

ABCDEFGH is a regular octagon calculate ABC ACD ABD angles
Click here to see answer by Alan3354(30993)

Question 280329: Dear Sir, Please help me!

ABCDEFGH is a regular octagon calculate ABC ACD ABD angles
Click here to see answer by Theo(3464)

Question 280420: Hi I've just started working on my conics unit. I really thought I understood how to get an equation from a circle and vise versa BUT then I started to work in my module and got this question. Determine the standard form of the equation of a circle with a center at(4,-1) and passing through(0,2). By looking at the center points I can write part of the equation. (x-4)^2 +(y+1)^2 but I have no radius or diagram of circle to get radius from so would it therefore be 1 or is this where the(0,2) comes in??? I'm not sure what or how I'm suppose to use the(0,2). Could you please explain and thanks so very much.
Click here to see answer by richwmiller(9143)

Question 280945: prove that:
1. equal chords of a circle subtend equal angles at the centre.
Click here to see answer by vleith(2825)

Question 280983: 1.Find the circumference of a circle if the area is (9/25)π ft2
a.(6/5)π ft
b.(3/5)π ft
c.(9/5)π ft

Click here to see answer by richwmiller(9143)

Question 281317: Backpackers who build campfires are advised to clear a 10ft-radius circle around the fire. How many square feet should be cleared?
Click here to see answer by rfer(12670)

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