A road roller takes 750 complete revolutions to move once over to level a road. Find the area of the road if the diameter of a road roller is 84 cm and length is 1 m.

Explanation

To solve the problem step by step, we need to find the area of the road that the roller covers after 750 revolutions. Here’s how we can do it:

### Step 1: Find the radius of the road roller
The diameter of the road roller is given as 84 cm. The radius (R) can be calculated as:
\[ R = \frac{\text{Diameter}}{2} = \frac{84 \, \text{cm}}{2} = 42 \, \text{cm} \]

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