Question

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

Answer 1

Answer:

1980m^2

Step-by-step explanation:

Diameter = 84cm

Radius = 84/2=42 cm = 0.42m

Height = 1m

C. S. A of roller = 2

$2\pi rh$

2*22/7*0.42*1

= 2.64m^2

Area of road = csa of roller * no. Of revolutions

Area of road = 2.64*750

Area of road= 1980m^2

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