Answer
(a) $3.63 \times 10^7~g$
(b) $1.273\times 10^2~m$
Work Step by Step
(a) $3.68\times 10^7 ~g - 4.759 \times 10^5~g$
$ = 3.68\times 10^7 ~g - 0.04759 \times 10^7~g$
$ = 3.63 \times 10^7~g$
(b) $\frac{6.497\times 10^4~m^2}{5.1037\times 10^2~m}$
$= 1.273\times 10^2~m$
