Formula: Let r = radius of a cylinder and h = height of the cylinder Volume of cylinder = πr2h From statement I: Let the height and inner radius of the cylinder be H cm and B cm respectively. ⇒ H – B = 7 From statement II: Circumference of a circle = 2πr ⇒ 2π × (A + B) = 308 (A = outer radius) ⇒ A + B = 49 From statement III: A – B = 7 Solving all three statements, A = 28 cm and B = 21 cm ⇒ H = 28 cm Volume of cylindrical can =
22
7
× 21 × 21 × 28 = 38808 cubic.cm ∴ Using all three statements we can answer the question.