Question 196976
The volume of a cone varies jointly as the height and the square of the radius of the base. 
V = k[h*r^2]
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A cone height 8 cm and a base of diameter 9 cm has volume 54π. Find the constant of variation and use it to develop the general formula for the volume of a cone.


54 = k[8*(9/2)^2]
54 = k[162]
k = 54/162
k = 1/3
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Equation:
V = (1/3)h*r^2
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Cheers,
Stan H.
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