the ratio between the curved surface area and total surface area of a cylinder is 1:2. Find the ratio between their height and radius.
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curved surface area =2πrh=c
total surface area =2πr(r+h)=t
t/c=r+h/h=2:1
t/c=r/h+1=2
t/c=r/h=1
c/t=h/r=1 (reciprocal both side)
total surface area =2πr(r+h)=t
t/c=r+h/h=2:1
t/c=r/h+1=2
t/c=r/h=1
c/t=h/r=1 (reciprocal both side)
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