NCERT Try This - Ant and laddu (40 cm) - Exploring Some Geometric Themes
Question: A cuboid is 30 cm by 12 cm by 6 cm. The ant and laddu are positioned as in the book (laddu on the back face). Among the unfoldings shown, one gives a right triangle with legs 24 cm and 32 cm. Find that shortest candidate length.
Answer: 40 cm.
Full step-by-step NCERT solution with diagrams on Something by Zero.