Question 330713
(8.3 x 10^13)(200) = 1660 x 10^13 = 1.66 x 10^16


(1.66 x 10^16) / (1.3 x 10^-9) = 1.28 x 10^25 (approx)



FYI: there may be an issue with significant figures
___ 200 (no decimal point) has one significant figure
___ "technically" , the answer should have only one significant figure


also , what are the dimensions for the sand grain volume? ___ there may be a units conversion issue