Question

question
find the surface area of the rectangular prism.
answer
attempt 1 out of 2

Explanation:

Step1: Recall the surface area formula

The surface area formula for a rectangular prism is \(SA = 2(lw+lh + wh)\), where \(l\) is the length, \(w\) is the width, and \(h\) is the height. Here, \(l = 4\) ft, \(w=2\) ft, \(h = 1\) ft.

Step2: Calculate each product

First, calculate \(lw\): \(lw=4\times2 = 8\). Then, calculate \(lh\): \(lh=4\times1=4\). Next, calculate \(wh\): \(wh=2\times1 = 2\).

Step3: Sum the products and multiply by 2

Sum the products: \(lw+lh+wh=8 + 4+2=14\). Then multiply by 2: \(SA=2\times14\).

Answer:

28