Find the square of 177.1. 311092. 314493. 307194. 313295. 30979

1.	Find the square of 177.1. 311092. 314493. 307194. 313295. 30979
Answer» Correct Answer - Option 4 : 31329 Concept used: Calculation skills trick. Calculation: Step - 1 Break down the number in such a way that the unit digit is separate and ten’s and hundred’s digit is together i.e. 17 and 7. Write down the squares of each of the parts in two digit format i.e. 17² = 289 and 7² = 49 The number obtained after this step is 28949. Step – 2 Multiply the digits with each other and also with the power 2 i.e. 17 × 7 × 2 = 238 Step – 3 Add the number obtained in step - 1 with the number obtained in step – 2 keeping the unit place empty i.e. 2 8 9 4 9 _ 2 3 8 _ 3 1 3 2 9 This is our final answer.

Answer» Correct Answer - Option 4 : 31329

Concept used:

Calculation skills trick.

Calculation:

Step - 1

Break down the number in such a way that the unit digit is separate and ten’s and hundred’s digit is together i.e. 17 and 7.

Write down the squares of each of the parts in two digit format i.e. 17² = 289 and 7² = 49

The number obtained after this step is 28949.

Step – 2

Multiply the digits with each other and also with the power 2 i.e. 17 × 7 × 2 = 238

Step – 3

Add the number obtained in step - 1 with the number obtained in step – 2 keeping the unit place empty i.e.

2 8 9 4 9

_ 2 3 8 _

3 1 3 2 9

This is our final answer.

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