Question

please help it's urgent

Answer 1

area of quadrant
$= \frac{1}{4} \times 3.142 (21²- 14²) \\ = \frac{1}{4} \times 3.142 \times 245 \\ = 192.447 m {}^{2}$
as based on quadrant

Area of shaded region=

Area of quadrant OAB - Area of quadrant ODC

Answer 2

The answer is given below:-