Question

how do i get x= 6.011 E-6 from x^2 =3.614E-11

Answer 1

if X^2 = 3.614*10^-11

now taking under root both side

x= 6.011656*10^-6

or x= 6.012*10^-6

Significant figures:

Significant figures are the numbers which are reported in a measurement including the estimated digit.

In general, 0 (zero) in front of decimal and at the end of a non-decimal number are not significant.

Estimate digit:

The last digit in a measurement is an estimate.

The rules which states which zeros are significant are follows:

1. Generally initially zeroes are nit significant numbers.
2. The zeros which are present between two numbers are always significant numbers.
3. Terminal zeros to the right of a decimal point are significant number.
4. Terminal zeros to the left of a decimal point are significant number if thery is measured.

For example; 0.000 012 58 L contains 4 significant numbers, when it round off into three significant number then we add +1 in 5. Thus the number is 0.000 012 6 L which contains 3 significant numbers.