Question

solve this equation as much as possible and fast​

Answer 1

ANSWER:-

Given:

A road roller takes 750 complete revolutions to move once over to level a road.

To find:

Find the area of the road if the diameter of a road roller is 84cm and length is 1m.

Solution:

⚫ Diameter=84cm

So,

Radius= 84/2 = 42cm

Length= 1m = 100cm

Now,

We know that, lateral surface area=2πrh

=) 2× 22/7 × 42×100

=) 26400cm²

Therefore,

The area of the road will be

=) lateral surface area× no. of rotations

=) 26400 × 750

=) 19800000cm²

We can convert in m²

=) 1980m²

Hope it helps ☺️