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A circular clock face has a diameter of 7 inches. what is the area of the clock face? round to the nearest tenth.
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Sep 9, 2018
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A circular clock face has a diameter of 7 inches. what is the area of the clock face? round to the nearest tenth.
Mathematics
high-school
Alireza Ranjbaran
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Alireza Ranjbaran
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since area is π r², and radius r is half the diameter d, you can say
π r² = π (d/2)² = (π /4) d²
for 7 inches that's π /4 7² = (π /4) (49) = 38.5 in²
Riding Cave
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Sep 13, 2018
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