Answer on Calculus Question for Anita Horton
a^2 + b^2 = h^2
and is rotated about a.
Therefore, the volume of a right circular cone equals:
V = 1/3 a*pi*b^2,
V =(pi/3) b^2 Sqrt[[h^2-b^2]
we need find maximum, therefore dV/db = 0
dV/db = (pi/3) ( 2b*Sqrt[h^2-b^2] - b^2/Sqrt[h^2-b^2]*b ) = 0
2 (h^2 - b^2) = b^2 => b = Sqrt[2/3] h
a =& Sqrt[h^2-b^2] = Sqrt[1/3] h
V = 1/3 a*pi*b^2 = 1/3 pi h^3 2/3 /Sqrt = 2*Sqrt/27 pi h^3
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