A cylinder has its height equal to its diameter. find the ratio between its covered surface and the total surface.
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A cylinder has its height equal to its diameter. find the ratio between its covered surface and the total surface.
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Step-by-step explanation:
Required ratio=
2πrh
2πr(h+r)
=
h
h+r
=
7.5
7.5+3.5
=
15
22
.