Respuesta :

apologiabiology
area=pi times radius squared or a=pi times r^2

diameter=2r
diameter=18
radius=1/2diameter
radius=1/2(18)=9

area=pi times 9^2
area=pi times 81
81π feet squared is the answer

aprox pi=π to 3.14 and do
81 times 3.14=254.34
the answer is closest to 254.34 square ft
The formula for the area of a circle is A=(1/4)pi r^2
A=area
d=diameter
so A=(1/4)pi(18)^2
A=(1/4)pi(324)
A=254.47

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