Iron weighs 8 times the weight of steel . Find the diameter of an iron ball whose weight is equal to that of a ball of steel 16 inches diameter?

6

7.5

9

8

Correct Answer : D

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