Question

find the diameter of the circle whose area is 346.5cm^2​

Answer 1

Step-by-step explanation:

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Answer 2

$A = 346.5 \: cm {}^{2} \\ \\ d = ? \\ \\ = > A = \frac{\pi \: d {}^{2} }{4} \\ \\ = > 346.5 = \frac{3.14 \times {d}^{2} }{4} \\ \\ = > 346.5 = 0.785 {d}^{2} \\ \\ = > d {}^{2} = \frac{346.5}{0.785} \\ \\ = > d {}^{2} = 441 \\ \\ = > d = \sqrt{441} \\ \\ = 21 \: cm$

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