Answer:
47.5 ft²
Explanation:
The formula to find the area of a semicircle:
, where
is the radius (diameter ÷ 2) and the
is alterable.
1) Substitute the given values into the formula. Since the diameter has been given to us, we need to divide it by two for the radius (11 ÷2 = 5.5).
=
2) Solve it.
=
= 47.4925
2) Round it off to the nearest tenth.
= 47.5