Quantitative Aptitude - Arithmetic Ability Questions

The total surface area of a hemisphere is 166.32 sq cm, find its curved surface area?

The volume of a hemisphere is 19404 cm3. Find its diameter (in cm).

ΔPQR is right angled at Q. If m∠R = 60o, then find the value of (secP - 1/√3) 

Find the total surface area (in cm2) of a right circular cone of diameter 21 cm and slant height 11 cm.

Pipes A, B and C are attached to an empty cistern. While the first two can fill the cistern in 4 and 10 hrs, respectively, the third can drain the cistern, when filled, in 6 hrs. If all the three pipes are opened simultaneously when the cistern is half-full, how many hours will be needed to fill the cistern?

If A + B = 90 deg and Cos B = 1/3, then the value of Sin A is

The value of sec2θ + 2tanθcotθ - tan2θ is

4 years ago, the ratio of Vikah's to Rahul's age was 3:5. After 6 years, this ratio would become 4:5. Find present age of Rahul.