Question 1126391
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V varies jointly as it’s height h and the square of its radius r.
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{{{V=k*h*r^2}}}


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cone with a radius of 4 cm, and a height of 6 cm, has a volume of 32 pi.
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(not "pie")
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{{{32pi=k*6*4^2}}}

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{{{2pi=6k}}}

{{{k=(1/3)pi}}}

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Volume of a Cone formula is  {{{V=(1/3)pi*h*r^2}}}.

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As for the correct symbol for pi, or {{{pi}}}, you can refer to how:
https://www.compart.com/en/unicode/U+03C0

Choose any of the symbol or character sequences called HTLM Entity.
Any of those three will give the symbol, {{{pi}}}.