Answer:
2.4 ft = height
Step-by-step explanation:
The formula for the volume of a pyramid is V = (1/3)(base area)(height).
Here V = 20 ft² = (1/3)(base area)(height).
Since the base area is (5 ft)², or 25 ft², 20 ft² = (1/3)(25 ft²)(height),
(height) = (20 ft³) / ( [25/3] ft², or 60 ft³ / (25 ft²) = 2.4 ft = height
