Water flows out at the rate of 10m per minute, from a cylindrical pipe of diameter 5mm. Find the time taken to fill a conical tank whose diameter at the surface is 40 cm and depth 24cm.

53 1/2 min

61 1/5 min

51 1/5 min

60 min

Correct Answer : C

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

The distance between the points (-7, 5) and (-7, -20) is

What is the slope of the line given by the equation 4g - 5 = 7 - 2e?