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2 answers:
Answer:
39.28 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 one half the area of the circle
A = πr²
The diameter of the circle is 10 cm, thus radius = 0.5 × 10 = 5 cm
A = 0.5 × 3.142 × 5² = 0.5 × 3.142 × 25 ≈ 39.28 cm² ( to 2 dec. places )
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