30-11-2018
Mathematics

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(Please Help!) Find the radius of a circle so that its area and circumference have the same value.

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wegnerkolmp2741o wegnerkolmp2741o

30-11-2018

Answer:

the radius must equal 2

Step-by-step explanation:

A = pi * r^2 C = 2 * pi *r

set them equal

pi * r^2 = 2 * pi *r

divide both sides by pi

r^2 = 2 * r

divide both sides by r

r^2 /r = 2r/r

r = 2

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