the perimeter of a rectangle is 78 units. the length is 5 units more than 3 times the width. find the length and width of the rectangle.

Question

Mathematics

Jovanni Schroeder

25 August, 07:10

the perimeter of a rectangle is 78 units. the length is 5 units more than 3 times the width. find the length and width of the rectangle.

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Answers (1)

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Clarissa Ramsey · Answer 1

Width=w

So length = 2w + 3

Perimeter = 2 (length + width)

78 = 2 (2w + 3 + w)

39 = 2w + 3 + w

39 = 3w + 3

36=3w

18 = w

l=w+3 = 18 + 3=21

so dimensions are

length=l=21

width = w = 18