Question

A wheel on Justin's bicycle is 0.5 m in diameter. Justin rides the bicycle in a race, and the wheel turns 31 times during the course of the race. How long is the race?

Answer 1

The length of the race is 15.5πm.

Step-by-step explanation:

The length of the race can be calculated by multiplying the circumference of the wheel by the number of times it turns. The circumference of a wheel is given by 2πr, where r is the radius of the wheel.

Since the diameter of Justin's wheel is 0.5m, the radius is half of that, which is 0.25m. Therefore, the circumference is 2π(0.25m) = 0.5πm. Multiplying this by the number of turns, 31, gives us a total distance of 15.5πm for the race.

Learn more about Calculating Distance in a Race