4 years ago

An equation is given.

Mathematics

1 answer:

stepladder [879]4 years ago

4 0

Answer:

r = $\sqrt{\frac{A}{4\pi } }$

Step-by-step explanation:

Given

A = 4πr² ( divide both sides by 4π )

$\frac{A}{4\pi }$ = r² ( take the square root of both sides )

$\sqrt{\frac{A}{4\pi } }$ = r

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