Mathematics for IGCSE & O level - Similarity (Section 1 - No. 37)
Two similar prisms have volumes of 27 cm³ and 125 cm³. What is the ratio of their corresponding surface areas?
3:5
9:25
27:125
6:10
Explication
The length scale factor = cube root of volume, or 3/5. Area scale factor = 3²/5²=9/25.