Answer: 1728 cm³
Step-by-step explanation:
Length of the tin sheet is 30 cm. Â Since 6 cm is cut off of EACH end, then the box will have a length of: 30 - 2(6)
                    = 30 - 12
                    = 18
Width of the tin sheet is 4² cm.  Since 6 cm is cut off EACH end, then the box will have a width of:  4² - 2(6)
             = 16 - 12
             = 4
Height of the box is the amount being cut off each end, so height is 6 cm
Volume = Length · width · height
       = 18cm · 4cm · 24cm
       = 1728 cm³