1i |__|__|__|__|__||__|__|__|__|__| 1i *10i = 10i^2 =>1i=10c...10i=100c.
2i |__|__|__|__|__||__|__|__|__|__| 2i *10i = 20i^2
3i |__|__|__|__|__||__|__|__|__|__| 3i *10i = 30i^2
4i |__|__|__|__|__||__|__|__|__|__| 4i *10i = 40i^2
5i |__|__|__|__|__||__|__|__|__|__| 5i *10i = 50i^2
....//////////////////// ///////////// /////|
1i |__|__|__|__|__||__|__|__|__|__|...| 1i *1i *10i = 10i^3 = 10kg
2i |__|__|__|__|__||__|__|__|__|__|...| 1i *2i *10i = 20i^3 = 20kg.
3i |__|__|__|__|__||__|__|__|__|__|...| 1i *3i *10i = 30i^3 = 30kg.
4i |__|__|__|__|__||__|__|__|__|__|...| 1i *4i *10i = 40i^3 = 40kg.
5i |__|__|__|__|__||__|__|__|__|__|./...1i *5i *10i = 50i^3 = 50kg.
=> 5i * 10i *10i = 500i^3 =0.5m^3
=> 5i * 10i *20i = 1000i^3 = 1m^3
=> 5i * 10i *40i = 2000i^3 = 2m^3
=>10i *10i *40i = 4000i^3 = 4m^3