If volume of cube = 18 cm³ then each side of cube = ∛18cm³ ≈ 2.6207
Volume of squared pyramid = [tex] \frac{l ^{2} h }{3} [/tex] since the pyramid fits perfectly in the cube then that means that there lengths and height are equal thus l² h = 18 cm³
To find the volume of the pyramid, divide the volume of the cube by 3. So that would be 18/3. The answer would be 6cm. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help.