- #1

zak100

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## Homework Statement

A 5-foot long cylindrical pipe has an inner diameter of 6 feet and an outer diameter of 8 feet. If the total surface area (inside and out, including the ends) is k*PI , what is the value of k?

## Homework Equations

In my view the formula should be:

2* PI * radius * h + 2*PI * radius * radius

## The Attempt at a Solution

I am confused with the formula. I made the attempt but found the answer wrong because of wrong formula.

Some body please guide me.

Zulfi.