Multiple choice

A right angle triangle ABC with sides 5 cm, 12 cm and 13 cm is revolved about the side 12 cm. What is the volume of the solid so obtained?

  1. 50 p cm2

  2. 100 p cm2

  3. 125 p cm2

  4. 150 p cm2
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

When a right triangle is revolved about one of its legs, it forms a cone. The leg we revolve about becomes the height (12 cm), and the other leg becomes the radius (5 cm). The volume of a cone is (1/3)πr²h = (1/3) × π × 5² × 12 = 100π cm³. Option B is correct.

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