187 Answered Questions for the topic Circles

Circles Radius

11/04/16

Circles Center and Radius
Center and radius of a circleA circle has the equation: (x - 5)^2 + y^2 = 8What are the center and radius of the circle?
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11/03/16

Center and radius of a circle
A circle has the equation: (x - 5)^2 + y^2 = 8 What are the center and radius of the circle?
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Circles Calculus

09/29/16

Find the equations and points for tangent lines touching a unit circle and with a point P=(7,2).
Draw the unit circle and plot the point P=(7,2). Observe there are TWO lines tangent to the circle passing through the point P. Answer the questions below with 3 decimal places of accuracy. (a)... more
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Circles

08/26/16

Circle problems
what is the ratio of the area of a circle to the radius of the circle?    The answer to this question cannot be determined. Why is it so? 
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Circles

07/24/16

Finding shaded area of circle
How do I find the area of the shaded area if the circle's radii are 15cm and 13cm and the angle of the triangle in it is 80?    What formulas do I have to use?     http://i.imgur.com/ULIRrdZ.jpg
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07/18/16

Find a polynomial for the shaded area of the figure
The picture is a circle shaded inside with a radius of 5   I can't figure out how to answer the question.
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06/23/16

Ferris wheel multiple questions
4)  Another Ferris wheel has a radius of 25 feet and reaches a maximum height of 55 feet above the ground. From the location of your seat when the wheel starts turning, it takes you 6 seconds to... more
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06/21/16

A circle has an equation 49x^2+49y^2+14x+294y-48=0 find the Center, Radius and intercepts of the circle.
I need help solving this  equation: 49x^2+49y^2+14x+294y-48=0 find the Center, Radius and intercepts of the circle.  
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Circles Math Help Sector

05/27/16

What's the total measure in degrees of 5 sectors?
A circle with a circumference of 46pi is divided evenly into 12 sectors. What's the total measure in degrees of 5 sectors?
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Circles

05/27/16

Geometry question
What is the ordered pair of the center of a circle with the equation  X^2+Y^2-22X+16Y=4X-8Y+38
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Circles Math Help Sector

05/07/16

The area is what fraction of the circle?
In a circle with center P, central angle MPN has a measure of 3pi/4 radians. The area of the sector formed by the central angle MPN is what fraction of the circle?
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Circles Tangent

05/03/16

Find locus of point P
If the tangent from point p to circle x2+y2=1 is perpendicular to the tangent from p to be circle x2+y2=3, then locus of p is ? A circle of radius _
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Circles Angles

04/23/16

Find AC in the circle
The angle is inscribed in a circle. Angle ABC=40 degrees. What is the angle AC equal
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04/12/16

select a circle
select a circle . these are in circles...1,2,3,4,5,6   Assume that one circle is selected at random and each circle is equally likely to be selected. Determine the probability of selecting.   a... more
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Circles Area Minor Arc

04/10/16

Question on Minor arc & minor segment. Circle
OA and OB are radii of the circle with centre O. The length of the radius is 25cm, and the angle AOB is 165 0. Show all information on a sketch. Find the area of the minor sector AOB, the length of... more
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Circles Radius

04/04/16

Circles and radius
Find the radius of each circle with the given measurement π = pi   Part A:   C=36π cm   Part B: C=42π ft   Part C: A=121π cm2   Part D: A= 734.41π ft2
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Circles

04/03/16

Find the area of the circle whose center is located at (-1,3) and passes through the point (2,-3)
Hi, I know how to find for triangles and rectangles but need help with this circle. 
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Circles

03/31/16

find the circumference and area using the ratio of the area to the circumfrence
the ratio of the area of the circle to the circumference of the circle a/c is 6/1. find the circumference and area of the circle leave your answer in terms of 
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03/28/16

Equation of circle given center and tangent line
What is the equation for a circle which has its center at (1, 2) and is tangent to the line -3x+2y= 14. Solve using your algebra skills; DO NOT USE CONSTRUCTIONS!!!!   The equation of a circle is... more
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Circles Area Sector Radius

03/27/16

How would I find the radius of a circle knowing its radian measure and area of the sector?
Q: An arc on a circle subtends a central angle of θ=4 radians, and the area of the sector is 128 cm2. Determine the radius, r centimeters, of the circle.   I know the formula is A= .5 x theta x... more
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03/08/16

if a circle is divided into six congruent sectors and each sector had the area of 5pi, what is the radius of the circle?
answer choices:   a. 5.5 b. 60 c. 30 d. 3 e. 6
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03/07/16

This is about circles and trig please help ASAP
A bowl is in the shape of a hemisphere (half sphere) with radius 10 cm. The surface of the water in the container has a radius of 7 cm. How deep is the water? Give your answer to one decimal place.
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Circles

02/29/16

If A, B, C, D are four points on a circle in order such that AB = CD, prove that AC = BD.
If A, B, C, D are four points on a circle in order such that AB = CD, prove that AC = BD.
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Circles

02/15/16

The cost of painting a circular sign is $3.50 per square foot. How much, to the nearest dollar, will it cost to paint the sign of its diameter is 36 inches
The cost of painting a circular sign is $3.50 per square foot. How much, to the nearest dollar, will it cost to paint the sign of its diameter is 36 inches
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Circles

01/29/16

find the locus
if the two circles x2 + y2 + 2gx +2fy + c = 0 and x2 + y2 - 2fy - c = 0 have equal radius then locus of (g, f) is   (I)x2 + y2 = c2 (ii)x2 - y2 = c2 (iii)x - y2 = c2 (iv)x2 +y2 = 2c2
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