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The diameter of the front wheel of the roller is1.5m.. How many meters does it press on the road every minute?
Find out the circumference of the roller first. Wheel circumference (i.e. circumference) =πd (generally we take the approximate value of π as 3. 14). The title has given us the length of the diameter, so we can bring in the numbers directly. Then the wheel circumference is: 3.14×1.5 = 4.71(m). The wheel rotates 8 times per minute. Now multiply the wheel circumference by 8, and you can calculate the length of the wheel pressing the road surface every minute: 4.7 1×8=37.68 (m).