The area of a circle is 220cm2 . Find the area of square inscribed in it !
Area of triangle = pi r2
220 = 22/7 x r2
r2 = 70
r = root70
diameter = 2 root70
Now in square =
diameter2 = side2 + side2 ( using pythagoras)
[ 2 root70 ] 2 = 2side2
280 /2 = side2
side = root140
Hence area of square = (root140)2 = 140 cm2
Pls verify !!