paigedomino paigedomino

01-10-2019
Mathematics

contestada

The length of a rectangle is 3 times the
width. If the perimeter is 40 cm, find the
length and width.

help me please Pre-Algebra

The length of a rectangle is 3 times thewidth If the perimeter is 40 cm find thelength and widthhelp me please PreAlgebra class=

Respuesta :

marabu78 marabu78

02-10-2019

Answer:L= 3W

Perimeter = 2(l+w) = 40

2(3w+w) = 40

2*4w = 40

8w =40

w = 5

l = 3*5 = 15

Hope I helped

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