Page:Sheet Metal Drafting.djvu/138

Problem 29A.—What is the capacity, in quarts, of the following standard sizes of sprinkling cans:

	Diameter of Bottom.		Height of Body.
(a)	4	″	4	⅝″
(b)	5	⅝″	7	$\scriptstyle {\frac {3}{16}}$′
(c)	7	⅛″	9	″
(d)	8	$\scriptstyle {\frac {13}{16}}$″	11	$\scriptstyle {\frac {5}{16}}$″

Problem 29B.—Regarding the body blank for the can as a rectangle whose height is equal to 10½″+⅜″+$\scriptstyle {\frac {3}{16}}$″ and whose length is (8×3.1416)+½″ what is its area in square inches?

Problem 29C.—Regarding the bottom of the can as a circle whose diameter is equal to 8″+⅜″+⅜″, what is its area in square inches?

Problem 29D.—Regarding the whole pattern of the breast, Fig. 168, as the combined area of two right triangles, having bases 5½″ long and altitudes 8″ high, what is the total area of the breast?

Problem 29E.—Regarding the spout as a trapezoid whose upper base is 1¾″, whose lower base is 9″, and whose altitude is 13½″, what is its area in square inches?

Problem 29F.—Regarding the semicircular handle as a rectangular piece of metal whose length is $\scriptstyle {{\frac {8\times \pi }{2}}+4''}$ and whose width is 1¼″+¼″+¼″, what is its total area?

Problem 29G.—Regarding the "boss" in Fig. 169 as a rectangle whose length is 4⅞″, and whose width is 2″, what is its total area?

Problem 29H.—Regarding the S handle as a trapezoid whose upper base is ⅝″, whose lower base is 1¼″, and whose altitude is 5¼″, what is its total area?

Problem 29I.—Regarding the "boss" in Fig. 170 as a rectangle whose width is $\scriptstyle {1{\frac {1}{16}}}$″ and whose length is 2⅛″, what is its area?

Problem 29J.—Adding together the answers to problems, 29B, C, D, E, F, G, H, and I, what is the combined area of all the parts?

Problem 29K.—A sheet of IXXXX charcoal tin measuring 20″×28″, costs 50 cents. Adding 5 per cent to the answer of Problem 29J, how much will the stock required for one sprinkling can cost?