jamesolubire jamesolubire

23-04-2022
Mathematics

contestada

The circumference of a circle is 18π ft. What is the area, in square feet? Express your answer in terms of \piπ.
HELp pls

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wegnerkolmp2741o wegnerkolmp2741o

23-04-2022

Answer:

A = 81 pi ft^2

Step-by-step explanation:

We know the circumference of a circle is given by

C = 2 * pi *r

18 pi = 2 * pi *r

Divide each side by 2 pi

18 pi / ( 2pi) = 2 pi r / ( 2pi)

9 = r

We can find the area by

A = pi r^2

A = pi ( 9)^2

A = 81 pi ft^2

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