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A rectangular solid is raised in temperature from 0°C to 100°C. If its length increases by 0.10% over this interval, what is the corresponding percentage increase in its volume?

1. 0.03%
2. 0.10%
3. 0.30%
4. 0.5%

Correct answer: 0.30%

Solution

For small expansion, percentage volume change = 3 * percentage linear change = 3 * 0.10% = 0.30%.

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