Question

the surface area of the cone is 132πmm2. what is the slant height of the cone? What are the steps & answer

Answer 1

$\pi \: \times r \: \times l = \: curved \: surface \: area \\ \pi \: rl = 132\pi \\cancel \: out \: \pi \\ rl = 132 \\ l = \: \frac{132}{6} \\ l = \: 22$