Question

The bredth of the rectangular class room is 2/3 of itss length.If its perimeter is 40m.Find its dimensions

Answer 1

Answer:

perimeter of rectangular=2b+2l

40=2(2/3)+2l

40-3/4=2l

157/4=2l

157/8=l

l=157/8

length is 157/8

Answer 2

Answer:

Breadth= 8m, Length= 12m

Step-by-step explanation:

Let the length of the classroom be x

So breadth = 2/3 of x= 2x/3

Perimeter of a rectangle= 2(l+b)

2(x+2x/3)=40m

2x+4x/3=40m

10x/3=40m

x=40×3÷10

x=12m

Therefore length= 12m

and breadyh=2/3 of x=2/3x12=8m.

Therefore length=12m and breadth=8m