Answer:
a. 2,440 km
b. [tex] 1.33*10^{27} kg [/tex]
Step-by-step explanation:
a. Diameter of Mercury = [tex] 4.88*10^3 [/tex]
Radius of Mercury = ½ of its diameter = [tex] \frac{4.88*10^3}{2} [/tex]
Radius of Mercury = [tex] 2.44*10^3 [/tex]
To convert the radius to ordinary number, multiply 2.44 by 1,000.
Radius of Mercury as an ordinary number = [tex] 2.44*1,000 = 2,440 km [/tex]
b. Mass of Jupiter = [tex] 1.898*10^{27} kg [/tex]
Mass of Saturn = [tex] 5.68*10^{26} kg [/tex]
Difference between mass of Jupiter and mass of Saturn = [tex] 1.898*10^{27} - 5.68*10^{26} [/tex] (subtract 5.68 from 1.898 = 5.68. we would retain the largest exponent, which is raised to the lower of 27.)
[tex] = 1.33*10^{27} [/tex]
