# . The length of a room is three times its breadth. If the perimeter of the room is 64 cm, then its breadth is ?cm.

2
by khushi786

Log in to add a comment

by khushi786

Log in to add a comment

The Brainliest Answer!

Now the lengthy = 3x

perimeter = 2(l +b)

64 = 2(3x+x)

64/2 = 4x

64/2*4 = x

8 = x

so the breadth = 8cm

and length = 3 * 8

= 24 cm

so, b = 3x cm

perimeter= x + 3x + x + 3x

or, 64 = 8x

or, x = 64 / 8 = 8 cm

so, length= 3 x 8 = 24 cm

and breadth = 8 cm