Extracted Practice Questions with Answers from the Mensuration PDF Below are all the practice questions from your Mensuration PDF, each with a clear solution and explanation for easy understanding. Q1. Three cubes of metal whose edges are in the ratio 3:4:5 are melted and one new cube is formed. If the diagonal of the cube is $18\sqrt{3}$ cm, then find the edge of the largest among three cubes. Options: (A) 18 cm (B) 24 cm (C) 15 cm (D) 12 cm