Question

Determine the surface area of this

cone if the radius is 4 cm and the
height is 12 cm. Round your answer
to the nearest tenth.

Answer 1

209.22 because A= pi *r * l + pi r^2

Answer 2

209.22cm²

Explanation:

A=πrl+πr2

l=r2+h2

Solving forA

A=πr(r+h2+r2)=π·4·(4+122+42)≈209.21889cm²