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8. Create an equation or formula for surface area of a cylinder. Try to do with units. Do this as a function that converts and does it on units supplied by user automatically if possible.
8. Create an equation or formula for surface area of a cylinder. Try to do with units. Do this as a function that converts and does it on units supplied by user automatically if possible.
===Answer===
===Answer===
Surface Area of a cylinder : 2πrh
Surface Area of a cylinder : 2πr(h+r)
ar:=2<*>π<*>(r<>(cm))<*>((h<>(cm))<+>(r<>(cm)))
ar:=2<*>π<*>(r<>(cm))<*>((h<>(cm))<+>(r<>(cm)))
ar(10,30)
ar(10,30)