Geometry

Question Analysis
This question assesses cone similarity by comparing ratios of radius and height (or slant height).
The main challenge is converting between slant height and vertical height to ensure consistent comparisons.

Key Concept Explanation
Similar cones require equal ratios of radii and either heights or slant heights.
Use Pythagoras' theorem () to convert between slant height () and vertical height ().

Step-by-Step Solution
1. For Cone A, calculate vertical height: