Question

The diameter of a child's bicycle wheel is 16 inches. Approximately how many revolutions of the wheel will it take to travel 1,600 meters? Use 3.14 for π and round to the nearest whole number. (1 meter ≈ 39.3701 inches) 6,299 revolutions 3,937 revolutions 1,254 revolutions 313 revolutions

Answer 1

The distance the bike will travel in one rotation is the circumference, or pi times diameter
So, one revolution takes 16pi inches, or 50.24 inches
We need to cover 1600 meters, which is 62,992.16 inches
The number of rotations is 62.992.16/50.24=1253.82, so the answer is C. 1254 revolutions