Question 18

Explanation

Since the water in the hemispherical container is transferred to the cylindrical container, the volume of water remains the same.

Since the radius of the sphere is the same as the radius of the cylinder, we can simplify the equation by dividing both sides by $\pi \cdot r^2$:

Given that the radius $r = 15 \text{ cm}$. We substitute this value into the equation:

Thus, the height of the water in the cylinder is $10 \text{ cm}$.