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

The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to level a playground. Find the area of the playground in m^(2).

The diameter of a roller is 84 cm and its length is 120 cm. It takes 500 complete revolutions to move once over to level a playground. Find the Area of the playground in m^(2) ?

Diameter of garden roller is 1.4 m and length 2 m takes 5 revolutions to complete the garden, find the area of the garden?

What shape is (d) A road-roller?

A storage tank consists of a circular cylinder with a hemisphere stuck on either end. If the external diameter of the cylinder be 1.4 cm and its length be 8 m. Find the cost of painting it on the outside at rite of Rs. 20per m^2 .

Two cross roads, each of width 10m, cut at right angles through the center of a rectangular park of length 700m and breadth 300m and parallel to its sides. Find the area of the roads. Also find the area of the park excluding cross roads. Give the answer in hectares.

Two poles of equal heights are standing opposite each other on either side of the road, which is 80 m wide. From a point between them on the road, the angles of elevation of the top of the poles are 60^(@) and 30^(@) , respectively. Find the height of the poles and the distances of the point from the poles.

A road 7m wide surrounds a circular park whose circumference is 352 m. Find the surface area of the road. Find the cost of paving the road at Rs.20 per m^2