Mathematics for IGCSE & O level - Similarity (Section 3 - No. 8)
A glass holds 15 cl. How tall is a similar glass that holds twice as much?
15 * 2^(1/3) cl
15 * 2 cl
15 / 2 cl
15 * 2^(3) cl
Giải thích
Volume scale factor = 2. Length scale factor = cube root of 2. Height increases by the length scale factor.