Stephen A. Lawrence wrote:
Radius is 1 cm, actually, as he assumed the OD was 2 cm. Specifically, he said:I estimate the output hose is 2 cm outside diameter. Inside diameter is 1.25 cm.So (external) surface area per meter is 2 * pi * R * L = 2 * pi * 1 * 100 = 630 cm^2.1 m^2 = 10,000 cm^2 so that's 0.063 m^2. So, you're both wrong.
Yup. As I said, he should have used units. Anyway, he is wrong somewhere. - Jed
