shaniad337 shaniad337

04-08-2017
Mathematics

contestada

A rectangle is 3 times as long as it is wide. The perimeter is 60cm. Find the dimensions of the rectangle.

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Banabanana Banabanana

04-08-2017

width = x
length = 3x

2(x + 3x) = 60
4x = 60/2
4x = 30
x = 30/4
x = 7.5 cm ← width

length = 3x = 3 * 7.5 = 22.5 cm

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kateacrissy01 kateacrissy01

04-08-2017

7.5cm x 22.5cm is the answer.

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