: The width of a rectangle is 5 cm more than triple its length. The perimeter of the rectangle is 240 cm. What is the length and width of the rectangle?

Question

asked Nov 28, 2022 166k views

1 Answer

Fowl · Answer 1 · 2022-12-02T19:18:33+0000

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Answer:

Explanation:

Let L represent the length of the rectangle. Then the width is W=5+3L, and the perimeter is ...

P = 2(L+W)

240 = 2(L +(5 +3L))

120 = 5 +4L

115 = 4L

115/4 = L = 28.75 . . . . cm

W = 5+3L = 5 +3(28.75) = 91.25 . . . . cm

The length and width of the rectangle are 28.75 cm and 91.25 cm.