Question

a road roller takes one Revolution on while moving down a road if its radius is 70 cm and width is 1.2 M find the area covered by it in metre square

Answer 1

The road roller covers=
circumference of its roller x its width
=
$2 \times \pi \times 70$


you can solve it now

Answer 2

Thank you for asking this question. Here is your answer:

We know that the length of the roller is 1m which is 100 cm

And in order to find the circumference of the roller we will use the  following formula:

π x D

22/7 X 84

264 cm

In order to find the length of the road we will multiply 264 by 750

the answer for that would be 198000 cm

Now we will find the width of the road, it will be equal to the length of the roller, which is 100 cm.

Now we will find the area of the road:

198000 x 100 = 19,800,000 cm² or 1980 m²

If there is any confusion please leave a comment below.