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Concepts Of Physics MCQ Edition [Volume 1]PhysicsPhysics and Mathematics

Using a slide callipers, the length and radius of a cylinder are measured as 4.54 cm and 1.75 cm , respectively. Compute the volume of the cylinder.

Options

  1. A14.6 cm ^3
  2. B43.7 cm ^3
  3. C25.0 cm ^3
  4. D43.68 cm ^3

Correct answer

B. 43.7 cm ^3

Step-by-step solution

The volume of a cylinder is given by the formula V = r^2 l Substituting the given values, r = 1.75 cm and l = 4.54 cm : V = (1.75)^2 4.54 V = 3.1416 3.0625 4.54 = 43.682 cm ^3 Since the measured quantities r and l both have 3 significant figures, the final result must be rounded off to 3 significant figures. Rounding off 43.682 to 3 significant figures, we get 43.7 cm ^3 .

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