The percentage increase in the surface area of a cube when each side is doubled is

If radius of a circle is increased by 10%, percentage increase in area is

If the sides of a triangle are doubled, then its area

If each of the dimensions of a rectangle is increased by 100%, then the area is increased by

The length, breadth and height of a cuboid are increased by 10%, 20% and 50% respectively. What is the percentage increase in volume of the cuboid ?

The surface area of a sphere is 616 sq. cm, then what will be its radius?