If the radius of a sphere is doubled,then its volume is increased by (in $\%$)

The edges of a cuboid are in the ratio $1: 2: 3,$ and its surface area is $88 \, cm^2.$ The volume of the cuboid is ........ $cm^3$.

The perimeter of one face of a cube is $20 \, cm$. Its volume must be (in $cm^3$):

$A$ right cylindrical vessel is full with water. How many right cones having the same diameter and height as those of the right cylinder will be needed to store that water?

$A$ cylindrical vessel of radius $4 \, cm$ contains water. $A$ solid sphere of radius $3 \, cm$ is lowered into the water until it is completely immersed. The water level in the vessel will rise by (in $cm$)

If each side of a cube is increased by $10 \%$,the volume of the cube will increase by (in $\%$).