Question

A patio in the shape of a semicircle has a diameter of 21 ft.

What is the approximate area of the patio, rounded to the nearest square foot?
Use 3.14 to approximate pi star times.

Answer 1

help

Answer 2

it would be the half of the area of a circle:
\[A=\frac{ \pi r ^{2} }{ 2 }\]
just plug \[pi=3.14\] and \[r=diameter/2 = 11.5\]
:)