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The length of a rectangle is four times its width.

If the area of the rectangle is 144 cm^2 , find its perimeter.

User DMart
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1 Answer

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Answer:

Let width of rectangle be x cm.

Width = x cm

Length = 4x cm

Area of rectangle = length x width

4x × x = 144

4x² = 144

x² = 144 ÷ 4 = 36

x = √36 = 6

Width = 6 cm

Length = 6 × 4 = 24cm

Perimeter = 6 + 24 + 6 + 24 = 60 cm

User GeekToL
by
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