Question 12 the length of a rectangle is three times its width. if the perimeter of the rectangle is 40 m, find its area.

Question

Patience Wilson

Mathematics

19 November, 18:53

Question 12 the length of a rectangle is three times its width. if the perimeter of the rectangle is 40 m, find its area.

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Answers (1)

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Dante White · Answer 1

Let the width be x.

Length = 3x

Perimeter = 40

2 * (L + W) = 40

L + W = 20

3x + x = 20

4x = 20

x = 5

Hence,

Length = 15 m

Width = 5 m

Area = L*W = 15 * 5 = 75 sq. m