Question

Heya User,

Answer the Question :-

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

Answer 1

Answer:

1980 m²

Step-by-step explanation:

A roller takes 750 complete revolutions to move once across the level of road .

The diameter of the roller = 84 cm .

Find the circumference of the roller :

C = d π

⇒ C = 84 cm × 22/7

⇒ C = 12 × 22 cm

⇒ C = 264 cm

⇒ C = 2.64 m

The width of the road = number of revolutions × circumference of the wheel

⇒ width of the road = 750 × 2.64 m

⇒ width of the road = 1980 m

Length of the road = 1 m

Area of the road = length × width

⇒ 1980 m × 1 m

⇒ 1980 m²

The area of the road is 1980 m².

Answer 2

Step-by-step explanation:

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