# trapezoidal gutter

## 06-09 Trapezoidal gutter of greatest capacity

## 41 - 42 Maxima and Minima Problems Involving Trapezoidal Gutter

**Problem 41**

In Problem 39, if the strip is L in. wide, and the width across the top is T in. (T < L), what base width gives the maximum capacity?

## 38 - 40 Solved problems in maxima and minima

**Problem 38**

A cylindrical glass jar has a plastic top. If the plastic is half as expensive as glass, per unit area, find the most economical proportion of the jar.