Question 1076967
{{{pi*r^2=400pi}}}
{{{r^2=400}}}
{{{r=20}}}


y, the cone height
{{{y^2+20^2=29^2}}}
{{{y=sqrt(29^2-20^2)}}}
{{{y=sqrt(441)}}}
{{{highlight(y=21)}}}




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The radius, height, and slant height form a right triangle in this cone.