Question 468475
what is the area of a cylinder whose radius is 9 inches

Solution,

since the height is not given, i'm going to assumed the area is the cross-sectional of the given cylinder,

the area asking is the area of the circle,

A = pi*r^2
 and r =  9 in.

thus area,

A = 9^2* pi

A = 81pi sq. inches <---- answer

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