5 Find the length of one arch of the cycloid x = r(0 – sin 0), y = r(1 – cos 0).

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5 Find the length of one arch of the cycloid x = r(0 - sin 0),
y = r(1 – cos 0).
6 Show that the surface area of a sphere of radius r is 4r?.
Transcribed Image Text:5 Find the length of one arch of the cycloid x = r(0 - sin 0), y = r(1 – cos 0). 6 Show that the surface area of a sphere of radius r is 4r?.
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