Respuesta :

A= π r²

The radius of a circle is half the diameter. So, if the diameter is 10, then the radius is 5. 

A : area
r : radius

A = π (5)²

A = π 25

A  ≈ 78.54
irspow
The area of a circle with respect to its diameter is:

A=(πd^2)/4, we are told d=10 so

A=100π/4

A=25π ft^2

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