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Answer: Diagonal of cube = 3√a, here a is the length of the edge.
Diagonal of cuboid = √(l²+ b² + h²) here l is the length, b is breadth and h is height.
What is The Formula of Diagonal of Cube and Cuboid
What is the formula for the diagonal of a cube? Learn the derivation with examples for CBSE Class 9 and 10 Maths and competitive exam prep.
