String around the Cylinder (Posted on 2002-08-09)

	Submitted by Happy
Rating: 3.3636 (11 votes)
Solution:	(Hide)
Imagine cutting the cylinder along the string and then unrolling the cylinder. The string becomes the hypotenuse of a right triangle whose height is 90cm and whose base is 5 * 24 cm (120cm). The Pythagorean Theorem then reveals the length. 90^2 + 120^2 = 150^2 Thus, the string is 150 cm.

	Subject	Author	Date
	answer	K Sengupta	2007-05-04 12:22:30
	Nice	bob909	2004-09-13 03:08:21
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