Find the area

a. 54 in

b. 36 in

c. 18 in

d. 324 in

(in pie)

area of a circle = pi r^2

radius = 18

 so R62 = 18^2 = 324

 since you want the answer in pi it would be 324PI

 so the answer is 324

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80π/3 or about 83.775

step-by-step explanation:

since a cone is 1/3 of a cylinder, we need to find the base's area. since area = πr^2, we get 16π. then, multiplying this by 5, we get 80π. dividing by 3, since the cone's volume is 1/3 of that of a cylinder's, we get 80π/3.

hope this !