if a tire rotates at 400 revolutions per minute when the car is traveling 144 km / h , what is the circumference of the tire ?
"400 rev / minute = 400 * 60 rev / 60 minutes = 24,000 rev / hour 24,000 * c = 144,000 m : c is the circumference c = 6 meters correct answer b"
multiply(divide(144, multiply(multiply(multiply(const_2, const_3), const_10), 400)), const_1000)