Respuesta :

osikbro

Answer:

361.1 square feet

Step-by-step explanation:

The area of the smaller circle is:

[tex]\pi \cdot 9^2= \\\\3.14 \cdot 81=254.34[/tex]

The area of the larger circle is:

[tex]\pi \cdot 14^2= \\\\3.14 \cdot 196=615.44[/tex]

Subtracting the smaller circle from the area of this one, you get 361.1 square feet. Hope this helps!

wegnerkolmp2741o

Answer:

361.1 ft^2

Step-by-step explanation:

The area of the inner circle is

A = pi r^2 = pi (9)^2 = 81 pi

The area of the outer circle is

A = pi r^2 where r is (9+5) = 14

A = pi (14)^2=196 pi

The shaded area is the outer circle minus the inner circle

196 pi - 81 pi

115 pi

Using 3.14 for pi

115 * 3.14

361.1 ft^2

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