The diameter of a roller. 100 cm long is 60 cm. It takes 500 complete revolutions to level a playground. What is the cost of levelling @ 50 ps. per sq. m?

Rs. 220

Rs. 200

Rs.400

Rs. 500

Correct Answer : A

The distance between the points (3, -4) and (3, 3) is

If a ration shop is to be set up within 3 km of each city, how many ratio shops will be required?

The distance between the points (-4, 5) and (-4, -15) is