What is the area of a circle which diameter is 8.5m?

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Answer 1 · 2018-04-26T23:51:14

$A = 18.06 π m^{2}$ $A = 18.06pi m^2$
or
$A = 56.72 m^{2}$ $A = 56.72 m^2$

The Area of a circle can be calculated using the equation $A = π r^{2}$ $A = pir^2$

The radius is half of the diameter $r = \frac{d}{2}$ $r=d/2$

$r = \frac{8.5}{2}$ $r=8.5/2$

$r = 4.25$ $r =4.25$

So now

$A = π {(4.25)}^{2}$ $A = pi (4.25)^2$

$A = 18.06 π$ $A = 18.06pi$

$A = 56.72$ $A = 56.72$