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

1 Answer

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)

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