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Find the difference between the radii of a Frustum, if the slant height and height are 10 cm and 8 cm.(a) 4 cm(b) 1 cm(c) 2 cm(d) 6 cmI have been asked this question in homework.The query is from Surface Area & Volumes topic in section Surface Area and Volumes of Mathematics – Class 10

Answer» CORRECT choice is (d) 6 cm

Easiest explanation: The slant height of a CONE = h^2 + (R – r)^2

10^2 = 8^2 + (R – r)^2

(R – r)^2 = 10064

(R – r) = 6 cm


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