Question

Evaluate without using math table

Sqrt(Rationalize(0.81)*10^(-5)/(Rationalize(2.25)*10^7))

Answer 1

$$\sqrt{\dfrac{0.81\cdot10^{-5}}{2.25\cdot10^7}}=\dfrac{0.9}{1.5}\cdot10^{-6}=0.6\cdot10^{-6}$$

$$=6\cdot10^{-7}$$