Çözüldü Cylinder and Square Prism Volumes

A slightly changed question from SAT Math II practice:

If a square prism is inscribed in a right circular cylinder of radius 3 and height 6 units, the volume inside the cylinder but outside the prism is at least ______ cubic units.

A) 57
B) 59
C) 61
D) 63
E) 65

Volume Difference = π·(3^2)·6 - [ (3·√2)^2 ]·6 = 54·(π - 2) > 54·(3.14 - 2)
Volume Difference > 54·1.14
Volume Difference > 61,56
At least 61 cubic units.

Original Question:
https://images.collegedunia.com/pub...ath Level 2 Subject Test Practice Paper 2.pdf
(Page 3, Question 7)