Question

(1) The length of a rectangle is two and half times it's width. If the perimeter of the rectangle is 84 cm, find its dimensions​

Answer 1

Answer:

l= 30cm b = 12 cm

Step-by-step explanation:

if width = x

length = 2.5x

perimeter = 2(l+b)

2(2.5x+x) = 84cm

7x= 84 cm

x= 84/7= 12 cm

l= 12*2.5= 30 cm