Use approximations to 1 significant figure to estimate the value of 0.101 x (51.2)^2 / (3.96)^1/2

Firstly simplify the equation down so all the elements are approximated to 1 significant figure, this gives us:0.1 x 50² / 4^1/2Then work out the values of the 50² and 4^1/250²= 25004^1/2=2Put these back into the equation and work out the answer:0.1x2500/2=250/2=125