A closed wooden box of thickness 0.5 cm and length 21 cm, width 11 cm, and height 6 cm, is painted on the inside. The cost of painting is Rs 70. What is the rate of painting in rupees per sq. cm?
0.7
0.5
0.1
0.2
Correct Answer : C
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
The distance between the points (-7, 5) and (-7, -20) is