3 years ago

Solve the formula for the indicated variable. A = 4πr² for r when r > 0 r =

Mathematics

2 answers:

SashulF [63]3 years ago

8 0

Answer:

√(A/4π) = r

Step-by-step explanation:

A = 4πr²

r² = A/4π

r = √(A/4π)

77julia77 [94]3 years ago

4 0

Answer:

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

Step-by-step explanation:

Given

A = 4πr² ( isolate r² by dividing both sides by 4π )

r² = $\frac{A}{4\pi }$

Take the square root of both sides

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

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