Is this right?

• June 9th 2006, 01:49 PM
Aarxn
Is this right?
what is the radius of a circle whose area is 616 square meters?
is the answer 308? am I right?
• June 9th 2006, 01:56 PM
CaptainBlack
Quote:

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:

$
616=\pi r^2 \ \ \mbox{m^2}
$
,

so:

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

RonL