A planet has an approximate radius of 4×108 m. Assuming the planet is spherical, find its volume in km3. Give your answer in standard form to 3SF. The volume of a sphere is (4/3)πr^3.
just plug into the given equation
4 x 108 m = 4 x 105 km
(4/3)(pi)(4x 105)3
(4/3)(π)(16 x 1015 ) = ................. km3
