Concept explainers
a.
To write: formula for the surface area of the given rectangular prism.
a.
Answer to Problem 40E
Explanation of Solution
The surface area of an object is the sum of areas of all its faces.
This prism has 4 rectangular faces of length l and width b , and 2 square faces of side length b .
Now,
Thus, the surface area of the prism is,
b.
To rewrite: the formula obtained in part (a) for one of the side lengths b or l and explain the reason for choosing that side length.
b.
Answer to Problem 40E
Explanation of Solution
Consider,
The reason for choosing side length l is that the formula
Chapter 1 Solutions
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