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Mathematics, 18.01.2020 01:31 anferneebcoleman
Consider a circle (radius r) to be made up of many concentric rings of radius r and thickness dr. find the area, da, of one of these rings and integrate from 0 to r to get the area of the circle. remember, the area of a very thin ring is just the circumference times the thickness. for something a bit more challenging, try to set it up as a sum of thin parallel bars rather than a sum of rings.
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Consider a circle (radius r) to be made up of many concentric rings of radius r and thickness dr. fi...
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