The height of the red prism must be twice the height of the blue prism.
Volume of a prism can be calculated as the area of the base multiplied by the height. Since the height of the blue prism is twice that of the red prism, the height of the red prism must be twice as much as that of the blue prism to make the volumes equal.
(12)(64) - (9) / 3
768 - 9 / 3
759 / 3
=253
Answer:
161 ft²
Step-by-step explanation:
40+56+12.5+12.5+40
3 times 3 and 3 to the second power