Question

What is the diameter of a circular field whose area is 616cm^2

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Answer 1

28

Explanation:

area of a circle

`\pi{r}^(2)`

616=3•142×r×r

616/3•142=r^2

196=r^2

r=√196

r=14

d=2r

d=2×14

d=28

Answer 2

28cm

Explanation:

`d=2\sqrt{(A)/(\pi)} =2\sqrt{(616)/(\pi) }`≈
`28.00563cm`

rounding 28.00563 to 28.

So hence, your answer is 28cm

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