Question

The perimeter of a semi-circular garden is 180 m. Find the area of the garden

Answer 1

Perimeter of the semi circular garden = 180 m
=>
$\pi \:r \: + 2r \: = 180 \: m$
=> r (3.14 + 2) = 180 m
=> r (5.14) = 180 m
=> r = 180 m ÷ 5.14
=> r = 35.01 m

Area of the semi circular garden =
$\frac{\pi \: {r}^{2} }{2}$
= (3.14 × 35.01 × 35.01 sq. m) ÷ 2
= 1924.34 sq. m