Answer:
105.6 cm²
Step-by-step explanation:
The area (A) of a circle is calculated as
A = πr² ( r is the radius ), thus the area of a semicircle is half the area of the circle, that is
A = [tex]\frac{1}{2}[/tex]πr² ( with r = 8.2 )
A = 0.5 × 3.142 × 8.2²
= 0.5 × 3.142 × 67.24 ≈ 105.6 cm² ( to 1 dec. place )
