Question

if a rectangle is 3 times as long as it is wide and it's perimeter is 144 cm.find its dimension ​

Answer 1

Answer:

Let length be 3x and width be x

Perimeter = 144 cm

Then, 3x + x = 144

4x = 144

x = 144/4 = 36.

Then, Length = 3x = 3×36 = 108 cm.

Breadth = x = 36 cm.

Hope it helps....!!!!

Follow me mate.....☆☆☆☆

Answer 2

Answer:

b = b

l = 3b

perimeter = 2 ( l+b )

144 = 2 ( 4b )

144 = 8b

b = 18 cm

l = 3b

 = 54 cm

hope it helped and please mark as brainliest:)