Quantitative Aptitude - Arithmetic Ability Questions

The angles of elevation of the top of a tower from two points at a distance of 4 m and 9 m from the base of the tower and in the same straight line with it are complementary. The height of the tower is

The radius of a wire is decreased to one-third. If volume remains the same, length will increase by

The total surface area of a cube is 73.5 sq.cm. Find its side (in cm).

Calculate the value of ∡OBC + ∡BAC, if O is the circum-center of the triangle ABC inscribed in the circle.

Find the number which is NOT a prime number.

'P' is the smallest positive integer such that every positive integer N greater than 'P' can be written as a sum of two composite numbers. Then 'P' is

In a triangle the length of the side opposite the angle which measures 60° is 6√3 cm. What is the length of the side opposite to the angle which measures 90°?