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Square root of 42.25​

Answer»

So, using this, 42.25=4225/100. Now, in 4225, if we remove 25, the remaining DIGITS are 42=6*7 =6(6+1). Hence, square ROOT of 4225 is 10(6)+5 =65. So, square root of 4225/100=65/10=6.5.

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