The formula of the area of a circle is : 
You know that the area is 1256.
So :
Divide both sides by
:
<span> take the square root of both sides in order to obtain r :
</span>
<span>
In short, the answer would be 20 (i have rounded).
Hope this helps !
Photon
</span>
You know that the area is 1256.
So :
Divide both sides by
<span> take the square root of both sides in order to obtain r :
</span>
<span>
In short, the answer would be 20 (i have rounded).
Hope this helps !
Photon
</span>