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If a circle has a diameter of 24 inches, which expression gives its area in square inches?
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If a circle has a diameter of 24 inches, which expression gives its area in square inches?

User Niyasc
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2 Answers

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A=pi(r)^2 just divide the diameter in half to get the radius
User FabioCosta
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The formula for the area of a circle is A=pi r squared
Divide 24 by 2 to get the radius or r.
12 squared by pi or 2.14
12 squared = 144
144 times 2.14 = the area
A = 452.39
User Zen
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7.5k points
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