Question

Find the area of the shaded part in the following figure. (π = 3.14)

Answer 1

Area of the shaded part = Area of 4 quadrant circles of radius `10/2` cm

= `4 xx 1/4 xx pi"r"^2`

= `3.14  xx 10/2 xx 10/2  "cm"^2`

= `314/4  "cm"^2`

= 78.5 cm²

Area of the shaded part = 78.5 cm²

Area of the unshaded part = Area of the square – Area of shaded part

= a² – 78.5 cm² = (10 × 10) – 78.5 cm²

= 100 – 78.5 cm² = 21.5 cm²

Area of the unshaded part = 21.5 cm² ...(approximately)