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enot [183]
3 years ago
8

The endpoints of a diameter of a circle are (4,-2) and (3,6). Find the area of the circle in terms of pi

Mathematics
1 answer:
Vinil7 [7]3 years ago
4 0
The endpoints of a diameter of a circle are (4,-2) and (3,6). The area of the circle in terms of pi is 65pi
First, is to get the length of the diameter by getting the distance of the two points: (4, -2) and (3, 6)

dis = sqrt( (x2-x1)^2 + (y2-y1)^2)
dis = sqrt( (3-4)^2 + (6--2)^2 )
dis = sqrt( 1 + 64 )
dis = sqrt(65)

Next, is to find the area of the circle:
A = pi * r^2
A = pi * (sqrt(65))^2
A = 204.20 square units

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Step-by-step explanation:

The reference angle in radians can be found by the formula ...

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Equivalently, it is ...

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<em>Additional comment</em>

For calculations such as this, you need to use the most accurate value of pi available. The approximations 22/7 or 3.14 are not sufficiently accurate to give good results.

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