# Find the square root of the following decimal numbers.

(i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25 (v) 31.36

**Solution:**

What is known: Perfect Squares in decimal form

What is unknown: Square root by using division method

Reasoning: To find the square root of decimal numbers, put bars on the integral part of the number and place bars on the decimal part on every pair of digits starting with the first decimal place.

Steps:

(i)

The square root of 2.56 is calculated as

√2.56 = 1.6

(ii)

The square root of 7.29 is calculated as

√7.29 = 2.7

(iii)

The square root of 51.84 is calculated as

√51.84 = 7.2

(iv)

The square root of 42.25 is calculated as

√42.25 = 6.5

(v)

The square root of 31.36 is calculated as

√31.36 = 5.6

**Video Solution:**

## Find the square root of the following decimal numbers. (i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25 (v) 31.36

### NCERT Solutions for Class 8 Maths - Chapter 6 Exercise 6.4 Question 3

Find the square root of the following decimal numbers. (i) 2.56 (ii) 7.29 (iii) 51.84 (iv) 42.25 (v) 31.36

The square root of the given decimal numbers are (i) 1.6, (ii) 2.7, (iii) 7.2, (iv) 6.25, (v) 5.6