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Answer:
A = 18π units²
Step-by-step explanation:
The area (A) of the semicircle is calculated as
A = [tex]\frac{1}{2}[/tex] πr² ( r is the radius ) , then
A = [tex]\frac{1}{2}[/tex]π × 6² = [tex]\frac{1}{2}[/tex]π × 36 = 18π ← exact answer