Concept explainers
a.
To find : the area of the wall.
a.

Answer to Problem 21E
The area of the wall is
Explanation of Solution
Given information :
The length of the wall is
Calculation :
Since, the length and height of the wall is provided. Therefore,
Substitute the provided values in above equation and solve:
Thus,
The area of the wall is
b.
To explain : whether there is enough paint available if two coats of paints is applied.
b.

Answer to Problem 21E
The paint is enough to apply two coats.
Explanation of Solution
Given information :
The can of paint will cover 200 square feet with one coat.
To apply two coats of paint the area covered will be two times the area of the wall.
Therefore,
Since, the paint in the can will cover 200 square feet which is greater than
The paint is enough to apply two coats.
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Holt Mcdougal Larson Pre-algebra: Student Edition 2012
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