Page 3 - LN 2

Example: Find the perimeter of a rectangle whose length and width is 5 cm and 10 cm,
respectively.
Solution: Given:

Length = 5 cm and Width = 10 cm
We know,
The perimeter of a rectangle = 2(length + width)

Substitute the value of length and width here,
Perimeter, P = 2(5 + 10) cm
P = 2 x 15 cm

Therefore, the perimeter of a rectangle = 30 cm
Example: Find the perimeter of a rectangle whose length and breadth are 12 cm and 15 cm,
respectively.
Solution:
Given:

Length = 12 cm and Breadth = 15 cm
We know,
The perimeter of a rectangle = 2(length + width)

Substitute the value of length and width here,
Perimeter, P = 2(12 + 15) cm

P = 2 x 27 cm
Therefore, the perimeter of a rectangle = 54 cm
Example: The two sides of the rectangle are given. What will be the perimeter of the rectangle?

Solution: One side of the rectangle is 2 cm and the other side is 5 cm.
We know that, the perimeter of a rectangle = 2 × (sum of adjacent sides)

Therefore, the perimeter of the rectangle = 2 × (5 + 2) = 2 × (7) = 14 cm