1 Answer

Dyelawn · Answer 1 · 2023-05-29T09:19:31+0000

To calculate the surface area of a cone we can use the following formula:

$S=\pi r^2+\pi Lr$

where r represents the radius of the base and L represents the slant height.

The radius of our cone is 7cm and the slant height 19cm, using those values on the formula we have our answer:

$S=\pi(7)^2+\pi(19)(7)=49\pi+133\pi=182\pi\approx571.8$

The surface area of this cone is 571.8 cm².

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