Mathematics for IGCSE & O level - Similarity (Section 1 - No. 36)
The height of a cone is 10 cm. A similar cone has a height of 20 cm. If the volume of the smaller cone is 50 cm³, what is the volume of the larger cone?
100 cm³
200 cm³
400 cm³
800 cm³
Giải thích
Length scale = 20/10 = 2; Volume scale = 2³ = 8, Volume of larger cone is 8 * 50 = 400 cm³.