Question

In the Fig, ABCD represents a flower bed. If OA=28m and OD=21m, find
1)the area of the bed.
2)the perimeter of the bed.​

Answer 1

Area of Bed = Area of OBA - Area of ODC

Area of Bed = (π28²)/4 - (π21²)/4

Area of Bed = 616m²- 346.5m²

Area of Bed = 269.5m²

Perimeter of Bed = (2πr)/4

Perimeter of Bed = 176/4 = 44m