Quantitative Aptitude - Arithmetic Ability Questions

An equilateral triangle has sides of 10 cm each. Find the ratio of in-radius to the circum-radius of the triangle.

If the edge of a cube is increased by 2 cm, the volume will increase by 488 cub.cm. What then will be the length of each edge of the cube?

The volume of a cuboid is 320 cubic cm. Find its total surface area if its length and breadth are 10 cm and 8 cm respectively?

If x+5+1x+1=6 then the value of (x+1)3+1(x+1)3 is

In ΔABC measure of angle B is 90 deg. If tanA = 15/8, and AB = 0.8 cm, then what is the length (in cm) of side AC?

If the angles of a triangle are in the ratio of 2 : 5 : 8, then find the value of the largest angle.

If the measure of the interior angle of a regular polygon is 120 deg then how many sides does it have?

If sin ­-240° = x, then the value of x is