Question
A cylinder has a height of 21 meters and a radius of 7
meters. If a cone has the same radius and height as the cylinder, what is the difference in volume between the cylinder and the cone? {Take Ď = 22/7}Solution
Volume of a cylinder = Ď Ă r² Ă h = (22/7) Ă 7 Ă 7 Ă 21 = 3234 mÂł Volume of a cone = (1/3) Ă Ď Ă r² Ă h = (1/3) Ă (22/7) Ă 7 Ă 7 Ă 21 = 1078 mÂł Difference = 3234 - 1078 = 2156 mÂł Correct answer: a
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