Answer:
47.5 ft²
Step-by-step explanation:
The formula to find the area of a semicircle: [tex]\frac{1}{2} * \pi * r^{2}[/tex], where [tex]r[/tex] is the radius (diameter ÷ 2) and the [tex]\pi[/tex] 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).
= [tex]\frac{1}{2} * 3.14 * 5.5^{2}[/tex]
2) Solve it.
= [tex]\frac{1}{2} * 94.985[/tex]
= 47.4925
2) Round it off to the nearest tenth.
= 47.5
