Question 368507
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Hi,
The surface area of a cone = {{{pi*r^2 + pi*rs}}}
Using the approxiamation for pi of 3.14
Surface Area = {{{3.14*r^2 + 3.14*rs}}}
s is the slant height of the cone.
Sketching would show:
s = {{{sqrt(r^2 + h^2)}}}
Surface Area = {{{3.14*r^2 + 3.14*r*sqrt(r^2 + h^2)}}}