Answer:
n = 25,464,790.89 revolutions
The tires have made 25,464,790.89 revolutions
Explanation:
Given;
Radius of tires r = 0.5 m
Total distance travelled d = 80,000 km = 80,000,000 m
1 revolution = 2πr
Total distance d = number of revolutions n × 2πr
d = n×2πr
d = 2πnr
Making n the subject of formula;
n = d/2πr
Substituting the given values;
n = (80,000,000)/(2×π×0.5)
n = 25,464,790.89470 revolutions
n = 25,464,790.89 revolutions
The tires have made 25,464,790.89 revolutions
