Area of a semicircle or quarter circle
Find the area of the whole circle first, then take the fraction of it that the shape shows. Use π = 3.14.
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A semicircle has a radius of 7 cm. Find its area in cm². Use π = 3.14.
Answer: 76.93
A semicircle has a radius of 14 cm. Find its area in cm². Use π = 3.14.
Answer: 307.72
A quarter circle has a radius of 19 cm. Find its area in cm². Use π = 3.14.
Answer: 283.39
Tip: Find the area of the whole circle first, then take the fraction of it that the shape shows. Use π = 3.14.
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