Q.

Find the square roots of the following numbers by the Prime Factorisation Method. 

(i) 729 (ii) 400 (iii) 1764

 (iv) 4096 (v) 7744 (vi) 9604 

(vii) 5929 (viii) 9216 (ix) 529 (x) 8100

see full answer

Start JEE / NEET / Foundation preparation at rupees 99/day !!

21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya

(Unlock A.I Detailed Solution for FREE)

Ready to Test Your Skills?

Check your Performance Today with our Free Mock Test used by Toppers!

Take Free Test

Detailed Solution

Finding the square root of the following by prime factorization method : 

(i) Square root of 729 by prime factorization method.

Question Image

Therefore, 

729= 3×3×3×3×3×3 =32×32×32 

729 =3×3×3 = 27

729 = 27

 

(ii)  Square root of 400 by prime factorization method.

Question Image

400= 2×2×2×2×5×5 =22×52×22 

400 =2×2×5 = 20

400 = 20

 

(iii) Square root of 1764 by prime factorization method.

Question Image

1764= 2×2×3×3×7×7 =22×32×72 

1764 =2×3×7 = 42

1764 = 42

 

(iv) Square root of 4096 by prime factorization method.

Question Image

4096= 2×2×2×2×2×2×2×2×2×2×2×2 =22×22×22×22×22×22 

4096 =2×2×2×2×2×2 = 64

4096 =  64

 

(v)  Square root of 7744 by prime factorization method.

Question Image

7744= 2×2×2×2×2×2×11×11 =22×22×22×112 

7744 =2×2×2×11 = 88

7744 =  88

 

(vi) Square root of 9604 by prime factorization method.

Question Image

9604= 2×2×7×7×7×7 =22×72×72 

9604 =2×7×7 = 98

9604 =  98

 

(vii) Square root of 5929 by prime factorization method.

Question Image

5929= 7×7×11×11=72×112 

5929 =7×11 = 77

5929 =  77

 

(viii) Square root of 9216 by prime factorization method.

Question Image

9216= 2×2×2×2×2×2×2×2×2×2×3×3=22×22×22×22×22×32 

9216 =2×2×2×2×2×3 = 96

9216 =  96

 

(ix) Square root of 529 by prime factorization method.

Question Image

529 = 23×23=232 

529 =23

529 =  23

 

(x) Square root of 8100 by prime factorization method.

Question Image

8100 = 2×2×3×3×3×3×5×5=22×32×32×52 

8100 =2×3×3×5

8100 =  90

Watch 3-min video & get full concept clarity

tricks from toppers of Infinity Learn

score_test_img

Get Expert Academic Guidance – Connect with a Counselor Today!

whats app icon
Find the square roots of the following numbers by the Prime Factorisation Method. (i) 729 (ii) 400 (iii) 1764 (iv) 4096 (v) 7744 (vi) 9604 (vii) 5929 (viii) 9216 (ix) 529 (x) 8100