Question

Find the lateral area of this cone. Leave your answers in terms of pi. 3cm 4 cm

Answer 1

`\textit{lateral area of a cone}\\\\ LA=\pi r√(r^2+h^2)~~ \begin{cases} r=radius\\ h=height\\[-0.5em] \hrulefill\\ r=4\\ h=3 \end{cases}\implies \begin{array}{llll} LA=\pi (4)√((4)^2+(3)^2) \\\\\\ LA=4\pi √(25)\implies LA=4\pi (5) \\\\\\ LA=20\pi \end{array}`