The front wheel of a road roller is known to be cylindrical, with a width of 2.5 meters and a diameter of 1.2 meters. The front wheel rotates 8 minutes per minute. The 1. roller takes 20 minutes from one end of the road to the other. How many meters is the length of the road?. 2. what is the area of the road roller from one end to the other end of the road?. Process and description
4, from one end of the road to the other end, the area of the road is equal to the length of the front wheel and the width of the wheel, or =602.88*2.5=1507.2 (square meter).For reference.
3, the length of the road is equal to 160 times the front wheel, 3.768 meters per lap, with a total length of =3.768*160=602.88 (meters);
1, turn 8 laps per minute, 20 minutes, a total of =20*8=160 circles;2, because the diameter is 1.2 meters, so a turn is equal to the front wheel perimeter =3.14*1.2=3.768 (meters);
