Page:Sheet Metal Drafting.djvu/47

Rh Problem 5B.—Compute the lateral area of the cylinder shown in Fig. 42, without the locks and flange.

Problem 5C.—Compute the area of the pattern with locks and flange added, Fig. 42.

Note.—The lateral area of a cylinder does not include any locks, laps, or flanges, and in order to arrive at the cost of material these must be added to the lateral area.