Quantitative Aptitude - Arithmetic Ability Questions

If √(1 + cot2A)/cotA = x, then the value of x is

If cosAcotA/(1 -­ sinA) = x, then the value of x is

What is the reflection of the point (5, 3) in the line y = -2?

The diameter of a circle is 28 cm find its area?

Speed of a boat along and against the current are 14 kms/hr and 8 kms/hr respectively. The speed of the current is

The distance between the points (7,7) and (k,-5) is 13. Find k?

If the population of a town increases by 25% in the first year and increases by 36% in the second year, then what is the average rate (in percentage)of increase in the population?

The ratio between the area of a square and that of a circle, when the length of a side of the square is equal to that of the diameter of the circle, is (take π=22/7)