Rearrange the formula A = / pi r ^ (2) for r

Question

Mathematics

Payten Arias

16 January, 08:45

Rearrange the formula A = / pi r ^ (2) for r

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Answers (1)

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Sunshine · Answer 1

Consider re-writing this formula as "A = pi*r^2." The backslash symbol "/" is unnecessary.

If A = pi*r^2, and we wish to solve for r, then divide both sides by pi:

A/pi = r^2

Taking the square root of both sides, sqrt (A/pi) = r (r must be positive in this situation).