A drainage tile is a cylindrical shell 42 cm long. The inside and outside diameters are 8 cm and 14 cm, respectively. What is the volume (in cm2) of clay required for the tile?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is Option 3 i.e. 4356.
Given that
Outside diameter = 14 and inside diameter = 8
Outside radius (R) = 7 and inside radius (r) = 4
Formula used
Volume of hollow cylinder = π(R2 - r2)h
Substituting the values we get
Volume = π × (49 - 16) × 42 = 4356 cm2