Asked by gary

The base of the lamp of a triangular prism with an equilateral triangle base . The surface of the stand is to be painted.what is the area that will be painted?Give the answer to the nearest whole number.
Answered by Steve
if the base has side s and the prism has height h, then the painted area (the top and three sides) is

1/4 s^2 √3 + 3sh