A right cone has a base diameter that is 12cm and a slant height that is 45cm what is the surface area

Given:

Base diameter = 12 cm, so base radius is r = 6 cm.

Slant height, L = 45 cm

The surface area is given by the formula

A = πr² + πrL

Therefore

A = π*6² + π*6*45

= 306π cm²

= 961.3 cm² (nearest tenth)

Answer: 306π cm² or 961.3 cm² (nearest tenth)