Question

The diagonal of the cuboid with dimensions 9 cm x12cm x 20 cm is​

Answer 1

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Answer 2

a² = 12² + 9²

a² = 144 + 81

a² = 225

a² = √225

a = 15²

a² + 20² = b²

b² = 20² + 15²

b² = 400 + 225

b² = 625

b = 25

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