Solve each word problem
The perimeter of a rectangle is 24 in. and its length is 3 times its width. What are the length and the width of the rectangle?
To find: The length and width of the rectangle.
Answer to Problem 5P
The length and width of the rectangle are 9 and 3 respectively.
Explanation of Solution
Given:
Perimeter of a rectangle is 24.
The length is 3 times of its width.
Concept used:
The formula to compute the perimeter of a rectangle is:
Calculation:
It has been given that length is 3 times of its width. So, the width and length are w and 3w respectively.
The width can be computed as:
Now, length can be computed as:
Hence, the required length and width of the rectangle are 9 and 3 respectively.
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High School Math 2012 Common-core Algebra 1 Practice And Problem Solvingworkbook Grade 8/9
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