A paperweight is shaped like a triangular pyramid. The base is an equilateral triangle. Find the surface area of the paperweight.

Question

asked Sep 11, 2020 115k views

2 Answers

MinimalTech · Answer 1 · 2020-09-14T18:24:47+0000

Answer:

The surface area of the paperweight is
$SA=8.3\ in^2$

Explanation:

we know that

The surface area of the triangular prism is equal to the area of its triangular base plus the area of its three triangular lateral faces

so

Find the area of its triangular base

SA=(1)/(2)(2)(1.7)

$SA=1.7\ in^2$

Find the area of its three triangular lateral faces

SA=3[(1)/(2)(2)(2.2)]

$SA=6.6\ in^2$

Adds the areas

SA=1.7+6.6

$SA=8.3\ in^2$