Quantitative Aptitude - Arithmetic Ability Questions

The volume of a cube is 166.375 cm3. Find its side (in cm).

Ramesh and Rahman can do a work in 20 and 25 days respectively. After doing collectively 10 days of work, they leave the work due to illness and Suresh completes rest of the work in 3 days. How many days Suresh alone can take to complete the whole work ?

If 3a=4b=6c and a+b+c=279 then a2+b2+c2 is equal to

What is the reflection of the point (3,-5) in the origin?

If the value of √42 is approximately 6.480, then what is the approximate value of √(6/7)?

If a3 + 3a2 + 9a = 1, then what is the value of a3 + (3/a)?

An octahedron has 6 vertices. How many edges does it have?

If the perimeter of a semicircle is 108 cm, then find its area (in cm²).