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Question

Estimate the square root of the following numbers(approximate numbers):
(i) 160 (ii) 1035

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Solution

Dear student
1) 160
1) 160 to the nearest whole number.First list some perfect square and look for the whole number near by 1611,4,9,16,25,36,49,64,81,100,121,144,169We observe that 160 lies between the perfect squares 141 and 169. That is141<160<169Now find the square root of each number.141<160<169So, it is between 12 and 13Since 160 is much closer to 169, so best whole number estimate is 13.Similarly try other parts as a part of your practise.
Regards

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