Question
A solid cuboid has dimensions 12 cm × 9 cm × 8 cm.
(a) Find its volume. (b) Find the length of its space diagonal.Solution
(a) Volume = l × b × h = 12 × 9 × 8 = 864 cm³ (b) Space diagonal d: d = √(l² + b² + h²) = √(12² + 9² + 8²) = √(144 + 81 + 64) = √289 = 17 cm.
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