Question

Please help me to solve this problem

Answer 1

Answer:

1.8m

Step-by-step explanation:

before hight

20×20×h=500

h= 1.25m

after

20×20×h= water volume+ pyramid volume

20×20×h'=500+(1/3)12×12×15

20×20×h'= 500+720

h'= 3.05

so increase h* =h'-h

h*=3.05-1.25

h*=1.8 m ans

but logically here water level must be 5000 m^3

and if it solve then also ans is 1.8 so finally 1.8 m is correct ans

follow me