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

Tutors Answer Your Questions about Circles (FREE)

Question 449538: Find the measures of the indicated angles.
In the ANGLE IS 51
Click here to see answer by stanbon(57977)

Question 449536: The arc length of a sector of a circle is 8π cm. If the circle has a radius 20π cm, what is the measure of the central angle of the sector?
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Question 449736: what is the locus of points that are 10 centimeters from a given point
Click here to see answer by jim_thompson5910(28717)

Question 450593: -x^2-y^2+10x+12y-36=0
Click here to see answer by rwm(914)

Question 451444: The measure of an angle is formed by two tangents to a circle of 90 degrees. If the radius of the circle is 8 centimeters, how far is the vertex of the angle from the center of the circle?
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Question 451641: I need to find the square feet in a tank Height of 21 feet and diameter of 18 feet.
Click here to see answer by Alan3354(31532)

Question 451739: How do you find the standard form of the equation of a circle, with a center (-1,5) through the point (23,-2)?

Click here to see answer by ewatrrr(10682)

Question 450238: Find the radius of a circle:
x^2 + y^2 + 4x -4y- 1 = 0
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Question 452301: In a circle whose radius is 16, find the area of the sector whose central angle measures 270°.
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Question 452372: Two pulleys are connected by a belt. The radii of the pulleys asre 3 cm and 15 cm, and the distance between their centers is 24cm. Find the total length of belt needed to connect the pulleys.
Click here to see answer by lwsshak3(6763)

Question 452433: A circle has a radius of 5 cm ..what is the length of an arc measuring 80 degrees
Click here to see answer by nerdybill(7008)

Question 452537: The circles are concentric. The inner circle is shaded. The cord is tangent to the inner circle and has length 12. What is the area of the non-shaded region?
Click here to see answer by MathLover1(6812)

Question 452991: Points A, B, C, and D, lie on a circle. If the ratio of the arcs determined by these points are AB:BC= 2:4; BC:DC= 4:3; CD:DA= 1:2; then how many degrees are in each of the 4 arcs?
Click here to see answer by ankor@dixie-net.com(15746)

Question 453456: in a circle of radius 20 cm the distance between a pair of equal and parallel chords is 24 cm find how long the chords are
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Question 453541: d=24cm whats the radius
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Question 453616: if the circumference is 52 what is the radius

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Question 454473: what is circumfrance and the area if the radius is 9 3/4 ?
Click here to see answer by Alan3354(31532)

Question 454520: find the diameter of a circle with an area of 52pie
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Question 456656: Given the equation of the circle (x – 9)² + y² = 484, the center of the circle is located at __________, and its radius has a length of __________ units.
Click here to see answer by Edwin McCravy(8999)

Question 456660: Given a circle with a radius of 2 , which is the length of an arc measuring 75
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Question 456889: if the diameter of a circle is 27 inch what is the radius

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Question 457581: i would like to buy edging for a 10 foot circular garden area - what length should i purchase?
Click here to see answer by stanbon(57977)

Question 457978: PlSSS HEEELLLPPP!!! This are the last problems I'm stuck on
Find the equation of the circle.
Center C(2, -3). radius 5
Center C(-4, 6). passing through P(1, 2)
Center C(4, -1), tangent to the y-axis

Click here to see answer by Alan3354(31532)

Question 457986: Find the equation of the circle.
Center C(2, -3). radius 5
Click here to see answer by richard1234(5390)

Question 457988: Find the equation of the circle
Center C(4, -1), tangent to the y-axis
Click here to see answer by robertb(4012)

Question 457987: Find the equation of the circle.
Center C(-4, 6). passing through P(1, 2)
Click here to see answer by poliphob3.14(115)

Question 458051: Sketch the graph of the circle or semicircle.
(x + 3) + (y – 2)^2 = 9
Click here to see answer by richard1234(5390)

Question 458242: find the radius of the circle defined with these three points. (0,1),(8,1),(4,5)
Click here to see answer by Alan3354(31532)

Question 458693: if i have an angle on a circle that is 40 degrees and the radius is 4 what is the area of that angle?
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Question 458909: Write the equation of a circle with endpoints of the diameter at (2, -5) and (-4, 3).
Click here to see answer by richwmiller(9144)

Question 459840: Dimensions of a Quarter. The circumference of a quarter is 7.85cm. What is the diameter? Radius? The area?
I have done this problme over and over again, but still come up with the wrong answer! What am i doing wrong:
D= 7.85/2=
R= 3.14x7.85=
A=3.14x2.925x2.925
My book gave me the answer but I still can not figure out how to write the problem because my book does not explain how to do this one problem correcty?
Thank you for your help.
Click here to see answer by stanbon(57977)

Question 459841: Problem:
Medicine Capsule: A cold capsule is 8mm long and 4mm in diameter. Find the volume of the capsule. Use 3.14 for
I did
V=3.01x(2)2x4 + 4/3x3.14x(2)3
Thank you very much
Click here to see answer by richard1234(5390)

Question 460067: f a cylinder has a bore of 80.5mm and a volume of 32.4cc solve for height in MM
Click here to see answer by Alan3354(31532)

Question 460799: Find the area of the shaded portion in the circle.
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Question 460993: Can someone help me with this:
Find the area of the circle, 8cm use 22/7 for tt. The area of the circle is___cm^2.
Thank you
Click here to see answer by jim_thompson5910(28717)

Question 460914: Find the arc length of the minor arc with a given 150 degree interior angle and a circumfrence of 31.4

Click here to see answer by Gogonati(817)

Question 461357: What is the radius of the circle (x - 1)2 + (y + 1)2 = 12?

Click here to see answer by richard1234(5390)

Question 461955: Find the area of one segment formed by a square with sides of 6" inscribed in a circle.
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Question 462059: what is the area of an circle whose diameter is 8 feet

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Question 463107: If m 1 = 90°, what is m ACB?= ?degrees
Given: BD is a diameter m 1 = 100°m BC = 30°
m 2 = ?degrees
Given: BD is a diameter m 1 = 100°m BC = 30°
m 3 = ? degrees

Given: BD is a diameter m 1 = 100°m BC = 30°
m 4 =? degrees

Given: BD is a diameterm 1 = 100°m BC = 30°
m AD = ?degrees

Given: BD is a diameter m 1 = 100°m BC = 30°
m CAB = ? degrees

Given: BD is a diameter m 1 = 100°m BC = 30°
m DAB = ? degrees

Given: BD is a diameter m 1 = 100°m BC = 30°
m ADB = ? degrees

Click here to see answer by richard1234(5390)

Question 464014: The area of a sector of a circle with a central angle of 150 degrees is 9ft^2 . Find the radius of the circle.
Click here to see answer by stanbon(57977)

Question 464099: what is the result when number of sides of a circle is multiplied by zero?
Click here to see answer by Theo(3504)

Question 464099: what is the result when number of sides of a circle is multiplied by zero?
Click here to see answer by richard1234(5390)

Question 464112: Sketch a circle with the endpoints for its diameter at (5,9) (11,17)
Click here to see answer by Alan3354(31532)

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