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TM 750-245-4
TABLE B-1 (Continued)
Angles
1 circle = 2π radians = 360 degrees
1 radian = 57.3 degrees 1 degree = 0.01745 radians
Geometric Figures
Circle, area of = D2 X 0.7854 = πr2
r = radius
Circle, circumference of = πD or 2 πr
Sphere, area of = πD2 = 4 πr2
D = diameter
Sphere, volume of = D X 0.5236 = 4/3 πr3
3
Triangle, area of = altitude X base
Cone, volume of = area of base X 1/3 altitude
Trapezoid, area of = (sum of parallel sides) X altitude
Pyramid, volume of = area of base X 1/3 altitude
TABLE B-2
TEMPERATURE CONVERSION TABLE
In left column find known temperature in degrees C. or F. Refer to corresponding C. or F. column for the equivalent.
Cent
Fahr
Cent
Fahr
Cent
Fahr
-100
-73.3
-148
21
-6.11
69.8
52
11.1
125.6
-90
-67.8
-130
22
-5.56
71.6
53
11.7
127.4
-80
-62.2
-112
23
-5.00
73.4
54
12.2
129.2
-70
-56.7
-94
24
-4.44
75.2
55
12.8
131.0
-60
-51.1
-76
25
-3.89
77.0
56
13.3
132.8
-50
-45.6
-58
26
-3.33
78.8
57
13.9
134.6
-40
-40.0
-40
27
-2.76
80.6
58
14.4
136.4
-30
-34.4
-22
28
-2.22
82.4
59
15.0
138.2
-20
-28.9
-4
29
-1.67
84.2
60
15.6
140.0
-10
-23.3
14
30
-1.11
86.0
61
16.1
141.9
0
-17.8
32
31
-0.56
87.8
62
16.7
143.6
1
-17.2
33.8
32
0
89.6
63
17.2
145.4
2
-16.7
35.6
33
0.56
91.4
64
17.8
147.2
3
-16.1
37.4
34
1.11
93.2
65
18.3
149.0
4
-15.6
39.2
35
1.67
95.0
66
18.9
150.8
5
-15.0
41.0
36
2.22
96.8
67
19.4
152.6
6
-14.4
42.8
37
2.78
98.6
68
20.0
154.4
7
-13.9
44.6
38
3.33
100.4
69
20.6
156.2
8
-13.3
46.4
39
3.89
102.2
70
21.1
158.0
9
-12.8
48.2
40
4.44
104.0
71
21.7
159.8
100
-12.2
50.0
41
5.00
105.8
72
22.2
161.6
11
-11.7
51.8
42
5.56
107.6
73
22.8
163.4
12
-11.1
53.6
43
6.11
109.4
74
23.3
165.2
13
-10.6
55.4
44
6.67
111.2
75
23.9
167.0
14
-10.0
57.2
45
7.22
113.0
76
24.4
168.8
15
-9.44
59.0
46
7.78
114.8
77
25.0
170.6
16
-8.89
60.8
47
8.33
116.6
78
25.6
172.4
17
-8.33
62.6
48
8.89
118.4
79
26.1
174.2
18
-7.78
64.4
49
9.44
120.2
80
26.7
176.0
19
-7.22
66.2
50
10.0
122.0
81
27.2
177.8
20
-6.67
68.0
51
10.6
123.8
82
27.8
179.6
B-17
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