Question

As the seafloor of the Atlantic Ocean spreads, the African Plate moves eastward. Over the last 100 million years, the plate has moved approximately 2,100 kilometers. How many centimeters per year does it move eastward?

Answer 1

the answer would be 2.1 centimeters per year

1m = 100 cm
1km = 1,000 m
1,000 m = 100,000,000 cm
2.1 x 100,000,000 = 210,000,000

210,000,000/100,000,000 = 2.1 cm

hope this helps!!