Quantitative Aptitude - Arithmetic Ability Questions

In the given figure, AB is a diameter of the circle with center O and XY is the tangent at a point C. If ACX = 35 deg, then what is the value (in deg) of CAB?

If the length of the side of an equilateral triangle is 8 cm, what is its area?

What is the area (in sq cm) of a circle whose circumference is 26.4 cm?

The area of an equilateral triangle is 9√3 sq cm, find its perimeter?

What will be the roots of the quadratic equation x2 - 25x + 156 = 0?

The height of a tower is 300 meters. When its top is seen from top of another tower,then the angle of depression is 60°. The horizontal distance between the bases of the two towers is 120 metres. What is the height (in metres) of the small tower?

A spaceship travels at 810 km/hr. How many metres does it travel in 1/5th of a second?

If a vendor sells apples at Rs 170 per kg he suffers 15% loss. If he sells at Rs 230 per kg, then what is his profit percentage?