Use the formula for the area of a circle to solve for the radius of the circle if the area is 78.5cm^2

asked Oct 13, 2023 23.5k views

3 votes

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6 votes

Answer:

$r=(√(314\pi))/(2\pi)$

Explanation:

$A=\pi r^2 \\ \\ 78.5=\pi r^2 \\ \\ r^2=(78.5)/(\pi) \\ \\ r=(√(314\pi))/(2\pi)$

Benny Ae answered Oct 17, 2023

5.6k points

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