The bottom diameter of a cylindrical steel is 8cm and the length is 90cm. How many cm is the height of a cylindrical machine part with a bottom diameter of 20cm Formula

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Volume of steel: 3.14 × (8 △ 2) &# 178; × 90 = 4521.6 (cm3)
Part height: 4521.6 △ 3.14 × (20 △ 2) &# 178;] = 14.4 (CM)

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