Answer: (6.2 x 10^18m) (4.7 x 10^-10m)
multiply the decimal numbers first: 6.2 x 4.7 = 29.14
multiply the base ten numbers by adding the exponents:
10^18m x 10^-10m = 10^8m
now you have:
29.14 x 10^8m
that's it -- unless you need to write the final answer in scientific notation. If so, you have to adjust the exponent for the base 10 to get:
2.914 x 10^(8m+1)
;)
Explanation: