238 A MANUAL FOR NORTHERN WOODSMEN 
AREA OF CIRCLES OR BASAL AREAS 
(Gives also Contents of Cylinders one foot long) 
Diameter 
Inches 
Area 
Sq. ft. 
Diameter 
Inches 
Area 
Sq. ft. 
Diameter 
Inches 
Area 
Sq. ft. 
Diameter 
Inches 
Area 
Sq. ft. 
Diameter 
Inches 
Area 
Sq. ft. 
1.0 
.005 
13.0 
0.92 
25.0 
3.41 
37.0 
7.47 
49.0 
13.10 
1.5 
.012 
13.5 
0.99 
25.5 
3.55 
37.5 
7.67 
49.5 
13.37 
2.0 
.022 
14.0 
1.07 
26.0 
3.69 
38.0 
7.88 
50.0 
13.64 
2.5 
.034 
14.5 
1.15 
26.5 
3.83 
38.5 
8.08 
50.5 
13.91 
3.0 
.049 
15.0 
1.23 
27.0 
3.98 
39.0 
8.30 
51.0 
14.19 
3.5 
.067 
15.5 
1.31 
27.5 
4.12 
39.5 
8.51 
51.5 
14.47 
4.0 
.087 
16.0 
1.40 
28.0 
4.28 
40.0 
8.73 
52.0 
14.75 
4.5 
.111 
16.5 
1.48 
28.5 
4.43 
40.5 
8.95 1 
52.5 
15.03 
5.0 
.136 
17.0 
1.58 
29.0 
4.59 
41.0 
9.17 
53.0 
15.32 
5.5 
.165 
17.5 
1.67 
29.5 
4.75 
41.5 
9.39 
53.5 
15 59 
6.0 
.196 
18.0 
1.77 
30.0 
4.91 
42.0 
9.62 
54.0 
15.90 
6.5 
.230 
18.5 
1.87 
30.5 
5.07 
42.5 
9.85 
54.5 
16.20 
7.0 
.267 
19.0 
1.97 
31.0 
5.24 
43.0 
10.08 
55.0 
16.50 
7.5 
.307 
19.5 
2.07 
31.5 
5.41 
43.5 
10.32 
55.5 
16.80 
8.0 
.349 
20.0 
2.18 
32 0 
5.59 
44.0 
10 56 
56.0 
17.10 
8.5 
.394 
20.5 
2.29 
32.5 
5.76 
44.5 
10.80 
56.5 
17.41 
9.0 
.442 
21.0 
2.41 
33.0 
5.94 
45 0 
11.04 
57.0 
17.72 
9.5 
.492 
21.5 
2.52 
33.5 
6.12 
45.5 
11.29 
57.5 
18.03 
10.0 
.545 
22.0 
2.64 
34.0 
6.30 
46.0 
11.54 
58.0 
18.35 
10.5 
.601 
22.5 
2.76 
34.5 
6.49 
46.5 
11.79 
58.5 
18.67 
11.0 
.660 
23.0 
2.89 
35 0 
6.68 
47.0 
12.05 
39.5 
18.99 
11.5 
.721 
23.5 
3.01 
35 5 
6.87 
47.5 
12.26 
59.5 
19.31 
12.0 
.785 
24.0 
3.14 
36.0 
7.07 
48.0 
12.57, 
60.0 
19.63 
12.5 
.852 
24.5 
3.27 
36.5 
7.27 
48.5 
12.83 
60.5 
19.96 
