I did 5 because it is the diameter but I was not really sure.
So then would you find the circumference of the driver and then multiply it by 600o(because it the driver makes 1 rotation per second and its asking about 10 minutes)
the foot operated sewing machine shown below has a driver pulley which is 30cm in diameter and is attached by a belt to a sewing pulley with a 5cm diameter. The sewing machine makes one stitch for each revolution of its sewing pulley.
a. The driver pulley is turned easily at one revolution...