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Curved surface area and total surface area​ of a right circular cylinder are in the ratio 1:2.find the ratio of its height to its radius

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(2 pi r h)/{(2 pi r) (h+r)} =1/2

h/(h+r)=1/2

2h=h+r

h=r

so,h/r = 1 = 1/1 ...

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(2 pi r h)/{(2 pi r) (h+r)} =1/2h/(h+r)=1/22h=h+rh=rso,h/r = 1 = 1/1 ...