What is the diameter and area of a hole drilled through aluminum?

The diameter of a hole drilled through aluminum at 22°C is 7.50 mm. Find the diameter and the area of the hole at 89°C.

2 Answers

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  • Anonymous
    7 years ago
    Best Answer

    Aluminum is 22.2 X 10-6 m / (m K°)

    http://www.engineeringtoolbox.com/linear-expansion...

    So 7.50 * 22.2 * 10-6 * 89 = 0.0111555 mm diameter increase (should only report 3 sig figs, so 7.51 mm).

    The area is then pi / 4 * d^2 = 44.31017 (so 44.3) mm^2

  • reando
    Lv 4
    3 years ago

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