Quantitative Aptitude - Arithmetic Ability Questions

If an equilateral triangle has side 12 cm, then what is the difference (in cm) between the circumradius and inradius?

Radius of cross section of a solid right circular cylindrical rod is 3.2 dm. The rod is melted and 44 equal solid cubes of side 8 cm are formed. The length of the rod is (Take Π = 22/7)

The average revenues of 7 consecutive years of a company is Rs 71 lakhs. If the average of first 4 years is Rs 66 lakhs and that of last 4 years is Rs 78 lakhs. What is the revenue for the fourth year.

What is the value 32cos 39sin 51-sin239 + sin251

A boat covers a distance of 14 km upstream and 16 km downstream in 9 hours. It covers a distance of 12 km upstream and 40 km downstream in 11hours. What is the speed (in km/hr) of the boat in still water?

If (cosecA -­ 1)/(cosecA + 1) = x, then the value of x is

In an isosceles trapezium _____.

What is the slope of the line perpendicular to the line passing through the points (-2, 3) and (2, 0)?