In order to forge a conical part with a base circumference of 62.8 cm and a height of 12 cm, what size of square steel with a base circumference of 4 DM should be cut as the raw material NO x, y solution!

62.8cm = 6.28dm, 12cm = 1.2dm
Cone bottom radius = 6.28 / 3.14 * 2 = 1 DM
3.14*1^2*1.2/4^2=0.2355 dm

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