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Re: I've built my own single 9V dc beck's blood cleaner

Gill Grabber Views: 65,000
Published: 13 years ago

This is a reply to # 1,687,818

## Re: I've built my own single 9V dc beck's blood cleaner

Surface Area of Cylinders.

To find the surface area of a cylinder add the surface area of each end plus the surface area of the side. Each end is a circle so the surface area of each end is pi * r2, where r is the radius of the end. There are two ends so their combinded surface area is 2 pi * r2. The surface area of the side is the circumference times the height or 2 pi * r * h, where r is the radius and h is the height of the side.

The entire formula for the surface area of a cylinder is 2 pi r2 + 2 pi r h

Estimate how much is sticking out and subtract.

Gill

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