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A brass disc 20degree C has a diameter of 30 cm a hole cut in the centre is 10cm in diameter. calculate the diameter of the hole when the...
A brass disc 20degree C has a diameter of 30 cm & a hole cut in the centre is 10cm in diameter. calculate the diameter of the hole when the tempreature of the disc is raised to 50degree C. (alpha for brass = 0.000018degree C)
