A hemispherical bowl of internal radius 18 cm contains an edible oil to be filled in cylindrical bottles of radius 3 cm and height 9 cm. How many bottles are required to empty the bowl?

Given, The radius of the bowl is 18 cm.

We know, the volume of the hemispherical bowl is 2πr².

So, 2 × π × 18 × 18 = 648π cm²

As The volume of the cylinder is πr²h= 9(9)π = 81π cm²

Hence, The number of bottles = $\frac{648\mathrm{\pi }}{81\mathrm{\pi }}=8$