1.8E-5 = 18E-6
so, sqrt will be
√18 E -3
You can do that by hand, or just do some estimating
4^2 = 16
4.2^2 = 17.64
4.3^2 = 18.49
So, you can see it is between 4.3 and 4.3
How can you calculate the square root of 1.8E-5 without a calculator
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