Question

Find the area of the remaining portion

Answer 1

(9)
Area of square =a2
784=a2
28cm=a
Diagnol of square =
$\sqrt{2a}$
diagnol of square =
$28 \sqrt{2}$
diagnol of square =diameter of circle
$28 \sqrt{2 = } 2 \times r$
$28 \sqrt{2 = } 2 \times r$
$28 \sqrt{2} \div 2 = r \\ 14 \sqrt{2 =} r$
Area of circle =22/7*(r2)
Area of circle =22/7*(14root2*14root2)
Area of circle =22/7*(14*14*2)
Area of circle =22/7*392
Area of circle =22*56
Area of circle =1232cm2