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german
3 years ago
14

Fine the area of a circle with a radius of 7 in. Write the formula, substitute, solve.

Mathematics
1 answer:
bija089 [108]3 years ago
8 0

Formula: A=(pi)r^2

Substitution: A=3.14(7^2)

                     A=3.14(49)

Solve: A=153.86 in^2


*I personally like to use the pi sign on my calculator to multiply the radius squared by, but my keyboard did not have a pi sign.  Usually, the pi sign is more exact.  If you used the pi sign, your answer would be 153.94 inches^2.  Hope this helps!

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