How many cubic feets in one cubic meter ?

Now we convert the 1cum in cubic feet ?

we know,
              25.4mm = 1 inch
             25.4*12mm = 1inch*12  (multiply both sides by 12)
      So,  25.4*12mm = 1 feet    ( becouse 12inch=1feet)

Then,     1mm = 1/25.4*12 feet
             1000mm = 1*1000/(25.4*12) feet
   OR,   1mtr = 3.280 feet

Then, 1cubic mtr = 3.280^3 = 3.280*3.280*3.280
                          = 35.287 cubic feet