# What will be the Side of the Square? If

If the side of a square increase by 4 cm. the area increase by 60 sq. cm. The side of the square is-

- 4 cm
- 5.5 cm
- 14 cm
- None of these

**Answer: (b) 5.5 cm
Explanation:-**

Let be the side of square = X then, area of square = X

^{2}sq.cm.

According to question, (X + 4)(X + 4) = X^{2} + 60

X^{2} + 4X + 4X + 16 = X^{2} + 60

X^{2} + 8X = X^{2} + 60 – 16

8X = 44

X = 44/8

X = 5.5

Hence, the side of square is 5.5cm