Question

In the given figure, PQRS represents a flower bed. If OP = 21 m and OR = 14 m, find the area of the flower bed.

Answer 1

Area of the flower bed is the difference between the areas of sectors OPQ and ORS.

Area of the flower bed`=theta/360xxpi("PO"^2 - "OR"^2)`

`=90/360xx22/7(21^2 - 14^2)`

`=1/4xx22/7xx35xx7`

=192.5 m²