Quantitative Aptitude - Arithmetic Ability Questions

If the volume of a cylinder is 3850 cubic cm and height is 25 cm, what is its radius? (Take π = 22/7)

A right circular solid cylinder has radius of base 7 cm and height is 28 cm. It is melted to form a cuboid such that the ratio of its side is 2 : 3 : 6. What is the total surface area (in cm2) cuboid?

1/3 part of a certain journey is covered with the speed of 25 km/hr, 1/2 part of the journey is covered with the speed of 45 km/hr and the remaining part covered with the speed of 37.5 km/hr. What is the average speed (in km/hr) for the whole journey?

In the following question, select the odd word pair from the given alternatives.

What is the value of cos2A/(1 + sinA)?

Reflection of the point (4,-5) in the y-axis is

What is the value of z2+1z2 when z = 5+26 ?

In the following question, select the odd letter pair from the given alternatives.