174 Answered Questions for the topic Circles

#### Find the exact circumference of the circle and approximate the circumference using 3.14 as an approximation for pi (full circle)

The line goes through the whole circle and says 21 feet.The exact area is blank (feet, square feet, or cubic feet) (exact number in terms of pi. Integers or decimals for any numbers in the...
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#### Find the exact circumference of the circle and approximate the circumference using 3.14 as an approximation for pi

The dot is in the middle of the circle and says 38 yards.The exact circumference is blank (yards, square yards, or cubic yards) (exact number in terms of pi)The circumference of the circle using...
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#### equations of circles

write the equation in standard form for the circle passing through (1,0) centered at the origin

#### equations of circles

write the equation in standard form for the circle passing through (1,0) centered at the origin

#### Math Intersecting Circles

If someone can help me prove the expression by finding the area of the purple area, took me time and I can't figure it out, thanks!

Circles

09/30/20

#### I need help with this question

Write the equation in standard form for the circle with radius 4 centered at the origin

#### Circle equation question(s)

So in this question, it is asking to graph a venn diagram with three circles. The equations I used are the followingLE1: (x-h^2)^2+(y-k)^2=r^2E2: (x-h)^2+(y-k)^2=r^2E3:...
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#### Help please with my circle geometry question

In an image, circles M,N,P,and Q are inscribed into circle O. Circles M and P are tangent to the center of circle O and eachother. They are cogruent and circle N is congruent to circle Q. Circles N...
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Circles Math

04/03/20

#### Diameter, Area, Circlular - Math word problem - PLEASE HELP

Farmer Brown is prepping his circular garden for the new spring / summer season of vegetables. The garden has to be larger than 25 square feet. If the diameter of the garden is 10 cm, what is the...
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#### Prove that the two circles shown below are similar.

Prove that the two circles shown below are similar.Circle X is shown with a center at negative 2, 8 and a radius of 6. Circle Y is shown with a center of 4, 2 and a radius of 3.

01/02/20

#### Circle Theorems

Anatoli is making a cement step for his patio in the shape of a sector of a circle. He has enough cement to fill an area of 3.6 square meters (m^2) such that the central angle is 1.2 radians. What...
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#### Where do I start?

Let A be the area of a circle with radius r. If dr/dt=3, find dA/dt when r=5.So I know to use the equation A=(pi)r^2 but, I don't know where to go from there. Do I plug in 5 for r and solve?

#### Find an equation of the circles:(there are 6 questions)

a)With center (0, 5); passes through (0, 0)b)Radius 4, tangent to x-axis; contain (–5,8)c)Center on line x=3, tangent y-axis at (0, 5)d)With center (–2, 0); passes through (2, 0)e)Radius 5, tangent...
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Circles Distance

08/30/19

#### Transmitter Question

A small radio transmitter broadcasts in a 53 mile radius. If you drive along a straight line from a city 70 miles north of the transmitter to a second city 74 miles east of the transmitter, during...
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#### How to find Chord from Arc Length and Sagitta

I am trying to find the formulas to solve the entirety of a circle segment but all I have are the arc length and the sagitta. From this can I solve for Θ or chord length? EX: I have a arc length of...
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Circles Geometry

05/03/19

#### Measurement of an arc

What is measurement of arc ABC where arc AB equals Y degrees, and arc BC = 1 1/2 X -Y degrees

Circles Geometry

04/29/19

#### How would I find the diameter of the second/larger marble?

2 marbles fit exactly, lengthwise, into a container. The smaller has a diameter of 4 cm and sits on the bottom of the jar. The larger marble sits next to the smaller one, touching both the smaller...
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Circles Geometry

04/10/19

#### AB is tangent to the circle k(O) at B, and AD is a secant, which goes through O. Point O is between A and D∈k(O). Find m∠BAD and m∠ADB, if measure of arc BD is 110°20'.

Circles

03/29/19

#### How to write an standard equation of the circle

Circles Geometry

03/27/19

#### How do I find the length of an arc with coordinates?

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