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Area = Pi multiplied by the radius squared
Circumference = Pi multiplied by the diameter
r = 10 in./2 = 5 in.
A = (3.1415)(5 in.)(5 in.)
= 78.54 in.2
C = (3.1415)(10 in.)
= 31.42 in.
Therefore, a small circle with a diameter of 10 inches has an area of about 78.54 inches squared and a circumference of about 31.42 inches.
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