In the backwaters of Kerala, a boatman was rowing
a boat using a long pole of length 4.80 metres. When
he put the pole

In the backwaters of Kerala, a boatman was rowing
a boat using a long pole of length 4.80 metres. When
he put the pole vertically into the water so that the
pole touched the ground under the water, 0.25 part of
the pole was above the water level. What is the depth
of the water at that point?​