Quantitative Aptitude - Arithmetic Ability Questions

A solid hemisphere has radius 14 cm. It is melted to form a cylinder such that the ratio of its curved surface area and total surface area is 2 : 3. What is the radius (in cm) of its base?

If (x – 2)2 + (y + 3)2 + (z – 15)2 = 0, then what is the value of x + y + z – 5?

If Cot θ = 24/7, then Sin θ = ?

If cos 27° = x, the value of tan 63° is

For what sum will the simple interest at R% for 2 years will be R?

A sum of Rs. 4000 is lent out in two parts, one at 8% simple interest and the other at 10% simple interest. If the annual interest is Rs. 352. The sum lent at 8% is

The lengths of the two diagonals of a rhombus are 5 cm and 12 cm. Find its area (in cm2)

Iftan 450=cot∅, then the value of ∅, in radians is