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Class 10 Mathematics Medium Mcq English Medium

A frustum has radii 8 cm and 2 cm. Which expression gives its volume at height 12 cm?

Question
A frustum has radii 8 cm and 2 cm. Which expression gives its volume at height 12 cm?
12p(64+4)/3
12p(10)/3
12p(64+4+16)/3
12p(64-4)/3
Answer
12p(64+4+16)/3
Detailed Explanation
Frustum volume is (1/3)ph(R² + r² + Rr), giving 12p(64+4+16)/3. — Examisthan.com
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