SET RS

32 LONGUEURS D'ARCS DFE CERCLFS, TABLE.—(Continuée.)

| Haut. Long. | Haut. Long. || Haut, | Long. | Haut. | Long, l Haut. | Long. PSS) NME NE | PRE A e || [| mme ——— | ES 84 |1.28498 || .873 |1.3373 || 406 |1.39372 | 43 | 1.45327 | 472 | 161871 || 841 |1.2868% || .374 |1.3896 || 407 |1.39548 |! 44 |1.455121| 473 |1.51764 || 342 | 1.287839 || .376 | 1234063 | 408 |1.39724 || .441 |1.45697|| .474 | 151958 343 |1.28805 || .376 |1.34229 | .109 |1.399 || 442 |1.45883|| 475 | 1.52152 1.344 |1.29052 || .377 |1.34396 || 41 | 140077 || .443 | 1.460691! .47c | 1.592346 346 |1.29209 || .378 | 1.845663 || .411 |1.40254 | .444 | 1.469255 || .477 | 1.529541 | 346 | 1.29366 || .379 |1.34731 || 412 |1.40132 || .445 |1.46441 || .478 | 1.592796 | 347 |1.29523 | .38 |1.34899 || .{13 [1.406 446 | 146628 |! 479 |1.52931 348 | 1.29681 | 381 |1.35068 | 414 | 140788 | (447 |146815|| 48 |1 22126 349 |1.29839 | 382 |1.35237 || 415 |1.40966 || 448 | 1.470021! 481 | 1.523392 | 35 [129997 .383 |1.35406 || .416 | 141145 || 449 |1.47189 || .482 | 152518 361 |1.30156 || .384 | 1.355765 || .417 |1.41324 || 45 |1.47377 || .483 | 1.53714 362 [1.803815 || .385 |1.35744 || .418 |1.41503 || .451 |1,47565 || .484 |1.5391 | 863 |1.30474 || .386 |1.35914 || .419 |1.41682 || 452 |1.47753 || .485 | 1.54106 354 |1.30634 || .387 |1.36084 || .42 |1.41861 || .453 | 1.417942 || ,486 | 1.542092 365 | 1.30794 |! .388 | 1.836254 || .421 |1.42041 || .454 |1.48131/|| .487 | 1.54499 366 | 1.320954 || .389 | 136425 | 422 |1.42222 || 455 |1.4832 || 488 | 1.54696 !! 357 |1.31115 || .39 | 1.366596 || .423 |1.42402 |! 456 |1.48509 || .489 | 1.548923 358 |1.31276 || .391 |1.36767 || .424 [1425831 457 : 148699 || ‘49 | 15509 869 |1.31437 || .392 | 1.269239 | .425 |1.42764 || .458 [1.488890 || 491 | 1.55288 36 |1.81599 || .393 |1.37111 || .426 |1.42942 || .459 |1.49079 || 492 | 1.554186

11-361 [131761 || 394 |1.37282 || 427 |1.45127 | 46 |1.49269 | 493 | 1.55685 362 |1.31923 || .395 |1.37455 || .428 | 1.432509 || .461 |1.4916 || .494 | 1.55854 363 | 1.32086 || .396 |1.37628 || .429 |1.43491 || .462 |1.49651 |! .495 | 1.56083 864 | 132249 || .397 |1.37801 || .43 | 1.435673 || .463 |1.49842 || .496 | 1,56282 865 |1.32413 || .398 |1.37974 || 431 | 1.43856 || .464 |1.50033|| .497 | 1.56481 | 366 |1.32577 || .399 |1.38148 || .432 | 1.440390 || 465 |1.50224 |! 498 | 1.5668 867 |1.32741 | 4 |1.28322 || .433 |1.44222 || 466 |1.50416 | 499 | 1 56879 368 |1.32905 | Aul 11.38496 || 434 |1.44105 || 467 |1.50608 | 5 | 1.57079 369 | 1.330690 | 402 | 1.88671 | 435 |1.44589 || 468 | 1.508 || 37 11.332384 1! 403 |1.28846 || 436 |1.44773 || .:69 | 1.509902! 371 |1.35299 || 404 | 1.589021 || .437 |1.44957 || 47 |1.51185|

tente tement

Pour trouver la lexgueur d’un are de cerele par la table précédente.

Rzs@cr.—Divisez la hauteur par la base, trouver le quotient, dans la :'olonne des hautenrs, et pre. nez la iongueur de cette hauteur dans la colonne suivante à droite, Multipliez la longueur ainsi obtenue par la base de l’are, et le produit donnera la l5ngueur de l’arc.

ExrMPprr.—Quelle est la longueur d’un arc de cercle, dont la base ou corde est de 109 pieds et la

hauteur 25 pieds ?

95 + 100=-.25 ; et .25 par la table —1.15912, longueur de la base, laquelle étant multipliée par 100