Question

4/5th part of pillar was inside the water of a river. if 2m of the pillar was outside the water , find the full height of the pillar.

Answer 1

Let x be the length of pillar
Since 4/5 part is inside the river so outside the river is 1-4/5=1/5th part
Also given 2m of pillar was outside the river so
1/5th of x=2
=x/5=2
x=10 meter
Thus pillar height is 10 meter