Question

find the area of shaded region in given figure, where radii of the 2 concentric circles with centre o are 7cm and 14cm respectively and angle aob=40°

Answer 1

area of shaded region is 51.3

Answer 2

area of shaded region =area of quadrant aob - area of quadrant COD
$40. \div 360 - 22 \div 7 \times 14 \times 14 - 40 \div 360 \times 22 \div 7 \times 7 \times 7 \\ =$