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The diagonal of the cuboid with dimensions 9cm × 12cm × 20cm is ………… A) 41 cm B) 32 cm C) 25 cm D) 21 cm |
Answer» Correct option is: C) 25 cm We have l = 9 cm, b = 12 cm & h = 20 cm. \(\therefore\) The length of the diagonal of cuboid = \(\sqrt {l^2 + b^2 + h^2}\) = \(\sqrt {9^2 + 12^2 + 20^2} = \sqrt {81 + 144 + 400} = \sqrt {625} = 25 cm\) Hence, the diagonal of the cuboid is 25 cm. Correct option is: C) 25 cm |
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