Volume of rectangular prism,
#1.
L = 12 cm
W = 12 cm
H = 12 cm
solve for Volume,
Volume = L × W × H
Volume = 12 × 12 × 12
Volume = 1728 cm³
#2.
L = 24 cm
W = 6 cm
H = 3 cm
solve for Volume,
Volume = L × W × H
Volume = 24 × 6 × 3
Volume = 432 cm³
Follow the same process for #3 and #4.
Don't forget to express your units in cubic ³ form. e.g., cm³, m³, ft³, in³ etc...