h) 72 cm³
i) 160 km³
Explanation:h) Volume of rectangular prism = length × width × height
length = 12cm
width = 2cm
height = 3cm
Volume of rectangular prism = 12cm × 2cm × 3cm
Volume of rectangular prism = 72 cm³
i) length = 5 km
width = 8 km
height = 4 km
Volume of rectangular prism = 5km × 8km × 4km
Volume of rectangular prism = 160 km³
