Quantitative Aptitude - Arithmetic Ability Questions

What is the measure (in degree) of an exterior angle of a regular polygon of 9 sides?

The perimeters of a square and an equilateral triangle are equal. If the diagonal of the square is 9 cm, what is the area of the equilateral triangle?

What is the value of (1/√3 + sin45 ) ?

If 7x - [3(2x - 3)]/2 = 1/2, then what is the value of x?

PQR is an equilateral triangle whose side is 10 cm. What is the value (in cm) of the inradius of triangle PQR?

A helicopter, at an altitude of 1500 m, finds that two ships are sailing towards it, in the same direction. The angles of depression of the ships as observed from the helicopter are 60° and 30°respectively. Distance between the two ships, in metres is

If P = 350 and Q = 600, then P is how much percentage less than Q?

The ratio of curved surface area and volume of a cylinder is 1 : 7. The ratio of total surface area and volume is 187 : 770. What is the respective ratio of its base radius and height?