Is this right?

**Aarxn** · June 9th 2006, 12:49 PM

what is the radius of a circle whose area is 616 square meters?
is the answer 308? am I right?

**CaptainBlack** · June 9th 2006, 12:56 PM

Originally Posted by Aarxn

what is the radius of a circle whose area is 616 square meters?
is the answer 308? am I right?

The area of a circle of radius $r$ is $\pi r^2$ in this
case we have:

$<br /> 616=\pi r^2 \ \ \mbox{m^2}<br />$ ,

so:

$<br /> r=\sqrt{616/\pi}\approx 14.00 \ \mbox{m}<br />$

RonL

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