Mathematics for IGCSE & O level - Similarity (Section 1 - No. 14)
If a solid has a volume of 120 cm³ and is scaled by a factor of 1/3, what is the new volume?
13.33 cm³
40 cm³
3.7 cm³
7.3 cm³
説明
Volume changes by (1/3)³, or 1/27. New volume = 120*(1/27) = 4.44cm³ (approx)