EE 20 72.24 + (0.7854 X 29) = R

dés 49 72.24 + (0.7854 x 40) = R. 2.299

36 3. 1° VS x =R. 8.83 ver. ; 20 4 49 x 4} = = R. 13.41 ver.; .15 3° V4 x B=R. 20.12 ver.; 4° V5 x = = R. 23.36 ver. ; Du 5° 4/(62.20 + 2) x (46.40 + 2) = R. 26.86 ver.

La EXERCICES DIVERS SUR LES SURF. CIRCULAIRES (p. 292), e 1. 3.1416 x 122 R. 452.3904 ver. car.

2. Le rayon = (75 -+ 3.1416) + 2 = 11.93 ver. ; le cercle = 3.1416 rec x 11.933 = R, 447.1279 ver. car.

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