Quantitative Aptitude - Arithmetic Ability Questions

How many diagonals are there in octagon?

The total surface area of a cube is 337.5 cm². Find its side (in cm).

If ABCD is a Cyclic Quadrilateral, then the value of Cos2A - Cos2B - Cos2C + Cos2D is

The tangents drawn at points A and B of a circle with centre O, meet at P. If ∠AOB = 120° and AP = 6 cm, then what is the area of triangle (in cm2) APB?

Which of the following condition is sufficient to state that triangle ABC and DEF are similar?

One internal angle of a rhombus of side 12 cm is 120°. What is the length of its longer diagonal?

The surface area of a sphere is 5544 cm2. Find its diameter (in cm).

Two trains are moving in the same direction at the speed of 35 km/hr and 71km/hr. The time taken by faster train to cross a man sitting in the slower train is 48 seconds. What will be the length (in metres) of the faster train?