Question

The length of a rectangle is 6 cm. less than 3 times the width. If the perimeter of the rectangle is 60 cm.,

find the length and the width.
(Hint - The perimeter of a rectangle is given by: P = 2L+2W)
The length is
The width is
cm.
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cm.
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Answer 1

Answer: w=9cm l=21cm

Explanation

l=3w-6

l+l+w+w=60

3w-6+3w-6+w+w=60

8w-12=60

8w=60+12=72

w=72/8

w=9

l=3w-6

l=27-6

l=21