Question

Calculate the quantity of the sand required (in cubic meter) in 20 cubic meters of reinforced cement concrete (1 : 2 : 4).

Answer 1

Answer:

here we need to find the volume of cubic box

vol. of cube =a³

20m³=

after that i dont know how to do

i had just given you an idea to solve this question

but till here it is correct . this much i am sure.