Roller cylinder is cylindrical, the width of the drum is 1.5 meters, the cross sectional diameter is 1.2 meters, if every minute to 10 laps, then 1 when the pressure of the road surface number of square meters?
Solution: the bottom perimeter is 3.14 * 1.2=3.768 (meters)The lateral area of the cylinder is 3.768 * 1.5=5.652 (square meters)10 turns per minute, you can find one minute, the area of the road is 5.652 * 10=56.52 (square meters)1 hours =60 minutes56.52 x 60=3391.2 (square meter)Answer: 1 hours, 3391.2 square meters of road surface pressure
Solution: the bottom perimeter is 3.14 * 1.2=3.768 (meters)The lateral area of the cylinder is 3.768 * 1.5=5.652 (square meters)10 turns per minute, you can find one minute, the area of the road is 5.652 * 10=56.52 (square meters)1 hours =60 minutes56.52 x 60=3391.2 (square meter)Answer: 1 hours, 3391.2 square meters of road surface pressure
Solution: the bottom perimeter is 3.14 * 1.2=3.768 (meters)The lateral area of the cylinder is 3.768 * 1.5=5.652 (square meters)10 turns per minute, you can find one minute, the area of the road is 5.652 * 10=56.52 (square meters)1 hours =60 minutes56.52 x 60=3391.2 (square meter)Answer: 1 hours, 3391.2 square meters of road surface pressure
