The height of the cylinder is 12, and the diagonal of the axial section of the cylinder is 13. Find the radius of the cylinder.

Find the diagonal of the base of the cylinder:
swell the axial section ABCD, then AB = 12, AC = 13,
BC² = AC²-AB² = 13²-12² = 25
BC = 5 – the diagonal of the cylinder base.
VO = BC / 2 = 5) 2 = 2.5 – cylinder radius.
Answer: radius = 2.5



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