Thread: cylinder in a sphere
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Old June 23rd, 2009, 02:12 AM
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pretty hard to explain this one without a diagram to point at

r = \sqrt{3^2-h^2}

Is taken from a right angled triangle where the long side (3 units) is from the middle to the point where the top of the cylinder meets the sphere. The 2 shorter sides are half of the height of the cylinder (h) and the remaining small side is the radius of the sphere.
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