Question

find the surface area of each composite figure round to the nearest tenth if necessary to serve correct units

Answer 1

Given

Slant height 0.75 foot

Perimeter 1.2 feet equilateral base

Area 0.07 sq foot

Procedure

This is an example, now let apply to the problems

Area of base = 0.07 sq ft

Area of face = 1/2*0.4*0.75 = 0.15 sq ft

Total

3*0.15 + 0.07

0.52

The total area would be 0.52 sqft