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Find the lateral area of the cone in terms of π.

15π cm2


18π cm2


21π cm2


12π cm2

Find the lateral area of the cone in terms of π. 15π cm2 18π cm2 21π cm2 12π cm2-example-1

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\textit{lateral area of a cone}\\\\ LA=\pi r√(r^2+h^2)~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ h=4\\ r=3 \end{cases}\implies LA=\pi (3)√(3^2 + 4^2) \\\\\\ LA=3\pi√(9+16)\implies LA=3\pi √(25)\implies LA=3\pi (5)\implies LA=15\pi~cm^2

User Tri Bui
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