Question

removed, as shown on the right. The large wheel of a tractor has a radius of 0,67 m. There is a damaged area of rubber on the outside surface of one of the large tractor tyres. How many times will this damaged piece of rubber touch the ground when the farmer drives the tractor home from the fields, over a distance of 1,5 km?​

Answer 1

The damaged area of rubber will touch the ground 834 times. This can be determined by using the formula for circumference, which is 2πr where r is the radius. In this case, the radius is 0.67 meters, so the circumference of the wheel is 4.24 meters. Since the farmer drives 1.5 km, this would be equal to 1500 meters. Therefore, the damaged piece of rubber will touch the ground 1500 meters/4.24 meters = 834 times.