A model of London's Millennium Wheel in the cubicle of Manhattan Review's CEO has supports which are 4 centimeters apart, and a reinforcement bar of 2 centimeters in length. The length of each support is 8 centimeters. If a fly sits on top of the wheel, how high does it sit above the surface on which the supports rest?
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发表于 2016-7-5 11:53:38
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