a building is 1.2 x 10^5 millimeters tall and has 28 floors. if all floors are the same height , how tall is each floor?

Question

i dont know the answer 

Answer 1

Since you know the overall height, the number of floors and that each floor is the same height, it's just simple division

1.2 * 10⁵ = 120000, so each floor is 120000/28 or roughly 4285.7 mm high