Question

In the given figure,OA=OB=8cm,O is the center of the circle.Find the area of OAB

Answer 1

$Area\: of\: sector \:OAB=\frac{πr^245°}{360°}$

$=\frac{22×8×8×1}{7×8}$

$=\frac{22×8×1}{7}$

$=\frac{176}{7}$

$=25.1428$

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