Question

The length of a rectangle is three times it’s width. The area of the rectangle is 48 square centimeters. Find the measures of the sides.

Answer 1

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Define length and width
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Let the width be x
Width = x
Length = 3x

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Form equation and solve for x
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x(3x) = 48
3x² = 48
x² = 48 ÷ 3
x² = 16
x = √16
x = 4

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Find length and width
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Width = x = 4
Length = 3x = 3(4) = 12

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Answer: Width = 4cm, Length = 12cm
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