Question

A half circle has a radius of 20 ft, what is the area of the half circle?

Answer 1

628.3 ft

Explanation:

area of half circle =
`(\pi r^(2))/(2)`

=
`(\pi *20^(2) )/(2)`

= 200
`\pi` = 628.3 ft

Answer 2

Explanation:

A = 0.5(πr^2 )

A = 0.5(π × (20^2 ))

A = 628.32 units^2