Chapter 0.10, Problem 6E

To determine

The surface area of rectangular prism.

Answer to Problem 6E

The surface area of rectangular prism is $\text{A=254}{\text{.64m}}^{\text{2}}$ .

Explanation of Solution

Given :

l = 7.8 m

w = 3.4 m

h = 9 m

Calculation: Surface area of rectangular prism:

  $\begin{array}{l}\text{A=2}\left[\text{wl+hl+hw}\right]\\ \text{here,}\\ \text{A=Surface}\text{area}\\ \text{h}\text{=}\text{height}\\ \text{w=}\text{width}\\ \text{l=}\text{length}\end{array}$

So,

Surface area of rectangular prism:

  $\begin{array}{l}\text{A=2}\left[\text{wl+hl+hw}\right]\\ \text{A=2}\left[\text{26}\text{.52+70}\text{.2+30}\text{.6}\right]\\ \text{A=2}\left[\text{127}\text{.2}\right]\\ \text{A=254}{\text{.64m}}^{\text{2}}\end{array}$

Therefore, surface area of rectangular prism is $\text{A=254}{\text{.64m}}^{\text{2}}$ .