Question

find the square (189.68)​

Answer 1

Given : 189.68

To Find : Square

Solution:

189.68

= 18968/100

(189.68)​² = (18968/100)²

= (18968)²/100²

(18968)² = (19000 - 32)²

using (a - b)² = a² - 2ab + b²

= 19000²  - 2(19000)(32) + 32²

= 361000000 - 1216000  + 1024

= 361001024 - 1216000

= 35,97,85,024

100² = 10000

(18968)²/100²  = 35,97,85,024/ 10000

= 35978.5024

(189.68)​² = 35978.5024

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