Answer:
Jupiter's diameter is "about" 21 times greater than Mars with an exact answer of around 20.588
Step-by-step explanation:
Jupiter = 1.4 x [tex]10^{5}[/tex] = 140,000
(1.4 "plus 5 places" is how I think of it to make it easier)
Mars = 6.8 x 10³ = 6,800
To find how many times greater Jupiter is than Mars we can divide tje diameter of Jupiter by Mars:
140,000 / 6,800 = 20.588235 etc
I am not sure how far you are rounding, but Jupiter's diameter is "about" 21 times greater than Mars