Question

Length of a rectangle is three times its breadth. If the perimeter of the rectangle is 32 cm, find its length and breadth.

Answer 1

Let the length be 3x and breadth be x
Therefore,2(L+b)=perimeter
2(3x+x)=32
2(4x)=32
8x=32
x=32/8
x=4
This Implies,Breadth=4 and length=3*4=12

Answer 2

Answer:

Length = 12 cm

Width = 4 cm.

Step-by-step explanation:

In the question,

Let us say the width of the rectangle is, w = x

So,

Length of the rectangle, l = 3x

Perimeter of rectangle, P = 32 cm

So,

We know that the Perimeter of the rectangle is given by,

Perimeter = 2(l + w)

So,

32 = 2(3x + x)

16 = 4x

So,

x = 4

Therefore, the length and the width of the rectangle is given by,

Length = 4 x 3 = 12 cm

Width = 4 cm.