1. Is a given rectangular block, a cube? I. At least 2 faces of the rectangular block are squares. II. The volume of the block is 64.
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By: guest on 01 Jun 2017 05.49 pm
I gives, any two of l, b, h are equal. II gives, lbh = 64. From I and II, the values of l, b, h may be (1 ,1 , 64), (2 ,2 ,16), (4, 4, 4). Thus, the block may be a cube or cuboid. Correct answer is (D).