Amailing container for posters is made from 87.4 square inches of cardboard the container is in the shape of a triangular prism the base of the prism is an equilateral triangle with 2- inch side lengths and a height of 1.7 inches what is the length of the container

The length of the container is

Step-by-step explanation:

we know that

The surface area of a triangular prism (a mailing container) is equal to

where

B is the area of the triangular base

P is the perimeter of the triangular base

L is the length of the container

step 1

Find the area of the base B

step 2

Find the perimeter of the base P

step 3

Find the length L of the container

we have

substitute and solve for L

answer: a. 74

step-by-step explanation:

it shows divided evenly, so add the 37+37 = 74