Question

From each of the two opposite corners of a square of side 16 cm, a quadrant of a circle of radius 2.8 cm is cut. Another circle of radius 5.6 cm is also cut from the centre. Find the area of shaded portion of the square.

Answer 1

The area of the remains part
= s × s - (22/7 × 2.8 × 1/4 × 2.8 + 22/7 × 5.6 × 5.6)
= 256 - (6.16 + 98.56)
= 256 - 104.72
= 151.28