If y varies directly as x, and y is 18 when x is 5, which expression can be used to find the value of y when x is 11?

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.

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step-by-step explanation:

21

jk it's 20

step-by-step explanation: