Question

The perimeter of a rectangle is 20 cms. Can you find the length of the rectangle if its breadth = 5 cms?

• A. 3
• B. 5
• C. 7
• D. 9

Answer 1

The correct option is B

5

Let the length of the rectangle = “p” cms

Perimeter of a rectangle = 2 ( length + breadth )

Hence 2 (p + 5 ) = Perimeter of the given rectangle

Forming an equation:

$2(p+5)=20$

$=2p+10=20$

$=2p=20-10=10$

$=p=\frac{10}{2}=5\text{cms}$