# Squares and Square Roots/ MCQ/Class 8 Mathematics

**Squares and Square Roots – Chapter 6/MCQCBSE Class 8 Mathematics/ Multiple Choice Questions- Extra Questions for PracticeChoose the correct answer from the options given below:**

**The square root of 20.25 is ———**

A. 45

B. 4.5

C. 0.45

Answer: 4.5**The area of a square is 484 square cm. Find the length of the side of the square?**

A. 20

B. 21

C. 22

Answer: 22 cm**In a right angled triangle PQR, right angled at Q, PQ = 3 cm, QR = 4 cm then PR = ——-**

A. 5

B. 7

C. 25

Answer: 5 cm**The square of 1.8 is ———–**

A. 3.24

B. 32.4

C. 324

Answer: 3.24**The hypotenuse and one leg of a right angled triangle are 10 cm and 8 cm respectively. Find the length of third side?**

A. 2 cm

B. 6 cm

C. 9 cm

Answer: 6 cm**Which of the following is a perfect square?**

A. 23

B. 24

C. 25

Answer: 25**Which of the following is not a perfect square?**

A. 289

B. 321

C. 361

Answer: 321**The square of 35 is ————–**

A. 1025

B. 1125

C. 1225

Answer: 1225**What will be the one digit in the square of 6435?**

A. 5

B. 6

C. 9

Answer: 5**What will be the number of zeroes in the square of 200?**

A. 2

B. 3

C. 4

Answer: 4**The perfect square number between 80 and 90 is ————-**

A. 81

B. 83

C. 85

Answer: 81**If a number has 1 or 9 in the units place, then its square ends in ———–**

A. 1

B. 2

C. 3

Answer: 1**The square of which of the following numbers would be an odd number?**

A. 727

B. 158

C. 1980

Answer: 727**How many natural numbers lie between the squares of 10 and 11?**

A. 20

B. 21

C. 22

Answer: 20**Which of the following is not a Pythagorean triplet?**

A. 3, 4, 5

B. 6, 8, 10

C. 5, 6, 8

Answer: 5,6, 8**The square of (-7) is ———-**

A. 14

B. 49

C. -49

Answer: 49**How many 3s are there in the prime factorisation of 324?**

A. 3

B. 4

C.2

Answer: 4**The square root of 6400 is ————-**

A. 8

B. 80

C. 800

Answer: 80**Which is the smallest 4 digit perfect square?**

A. 1024**B. 1025**

C. 1026

Answer: 1024**Which is the greatest 4 digit perfect square?**

A. 9800

B. 9801

C. 9802

Answer: 9801