Question

Find the perimeter of the following
(a) A square of side (2.5 + x) m
(b) a rectangle of length (10+x)m and
breadth (7-y)m​

Answer 1

Perimeter of the square ABCD

= AB + BC + CD + AD

= 2 cm + 2 cm + 2 cm + 2 cm

= (2 × 4) cm

= 8 cm

Perimeter of a square is 4 times of s side.

Perimeter of a square = 4 × length of a side.


Let us consider some of the examples on perimeter of a square:

Examples on Perimeter of a Square
1. Each side of a square is 2.5 cm. Find its perimeter.

Solution:

Side = 2.5 cm

Therefore, perimeter of a square = 4 × length of a side

= (4 × 2.5) cm

= 10 cm



2. A rope of length 96 m was used to fence a square garden. What is the length of the side of the garden?

Solution:

Perimeter of the garden = Length of the rope = 96 m

We know that perimeter of a square = 4 × length of a side

So, 4 × length of a side = 96 m

Length of a side = 964
96
4
m = 24 m

Therefore, length of the one side of the square shape garden is 24 m.