Step-by-step explanation:
3. The prisms are congruent, so they have the same base, height, and volume.
Volume of a prism is:
V = Ah
Plugging in values and solving for A:
90 in³ = A (15 in)
A = 6 in²
4. The cylinders are congruent, so they have the same radius, height, and volume.
Volume of a cylinder is:
V = πr²h
Plugging in values and solving for h:
176π cm³ = π (4 cm)² h
h = 11 cm
