Quantitative Aptitude - Arithmetic Ability Questions

The surface area of a sphere is 5544 sq.cm. Find its diameter (in cm).

The value of aa-b+bb-a is

The lengths of the two diagonals of a rhombus are 8 cm and 15 cm respectively. Find its area (in cm²).

A shopkeeper offers 15% discount on all plastic toys. He offers a further discount of 4% on the reduced price to those customers who pay cash. What does a customer have to pay (in Rs) in case for a toy of Rs 200?

If ( x - 5)2 + (y - 2)2 + (z - 9)2 = 0, then value of (x + y - z) is

If Tan θ = 7/24, then what is the value of Cosec θ?

If tan4θ + tan2θ = 1 then the value of cos4θ + cos2θ is

If a3 + 3a2 + 9a = 1, then what is the value of a3 + (3/a)?