A planet has mass 6.4x1024 kg and radius 3.4x100 m. Calculate energy required to
remove on object of mass 800 kg from
the surface of the planet to infinity.

6 cm

step-by-step explanation:

you can use a^2+ b^2=c^2

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12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !