hown in Fig. 89, therefore, Des 1 in. on a side or

-12"

clearly in mind:
of length).

- (the measure of area). the measure of volume). contents of any rectanlid or block whose length, and thickness are known found by multiplying tohe length, the width, and kness. Thus the volume ock of steel 6 in. wide, ick, and 12 in. long, Fig. r 288 cu. in. Since the es the area of the end, it olume of any solid whose sentire length equals the area of end

be

thus

in., area of end. 4 11,762.14 cu. in. volu

The following prob

according to the for

1. How many cubic in wide, 11⁄2 in. thick, and 5 2. A tank is 8 ft. long, feet does it contain? 3. How many cubic fe 33 ft. long?

4. Find the number of 9 in. in diam. and 5 ft.

5. A tank car is 331⁄2 cubic feet does it contai gallons of oil would it h

6. An engine has a cy Find the piston displace in. in diam. and 26 in.

Len

7. Find the capacity inside dimensions as g

3 ft. y 3 ft. 9 in.

2 ft. 6 in.

of any solid, as a block olume when we know its ft. For example, since - cu. in. the weight of a in 51⁄2 in. in diam, and lows:

54 = 23.76 sq. in. 85.12 cu. in.

79.8+ lb.

following table giving commonly used is to be lowing problems:

round wrought-iron bar

93"

10. Find the weight Fig. 94.

11. Find the weight 95 and table. Their di length. Allow 1⁄4 in. fo

A

84 in.

54 in.

4 in.

60 approx. 100 approx. 120 approx.

12. Find the weight 13. Find the weight of 14. Find the weight of 15. Find the weight o in. thick.