Question
Three cubes of equal volume are joined end to end. Find
the surface area of the resulting cuboid if the diagonal of the cube is 7ā3cm.Solution
Given ā diagonal = aā3cm =7ā3cm a = 7cmĀ Visible faces =14 Surface area of visible faces: - 14aĀ² =14 Ć49 =686cmĀ²
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8 students appear in an examination. In how many ways can the result be announced?
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