ð ã©ããã³ã°çšçŽãµã€ãºèšç®æ©
åäœã¯èªç±ã§ã(cmãªã©ããã¹ãŠã®å€ã§çµ±äžããŠãã ãã)ã
ç®±ã®çžŠã»æšªã»é«ãã®å¯žæ³ãå ¥åãããšããã¬ãŒã³ãããããã«å ãã®ã«å¿ èŠãªã©ããã³ã°çšçŽã®ãµã€ãº(å¹ ã»é·ã)ãèšç®ããããŒã«ã§ããéã代(ãªãŒããŒã©ãã)ãšç«¯ã®æã蟌ã¿åãèªç±ã«èª¿æŽã§ããŸãã
äœ¿ãæ¹
- ç®±ã®çžŠ(é·ã)ã»æšª(å¹ )ã»é«ããå ¥åããŸãã
- éã代(ãªãŒããŒã©ãã)ãšç«¯ã®æã蟌ã¿åãå¿ èŠã«å¿ããŠèª¿æŽããŸã(ããã©ã«ãå€ãã)ã
- å¿ èŠãªã©ããã³ã°çšçŽã®å¹ ãšé·ããèªåçã«èšç®ãããŸãã
èšç®ã®ä»çµã¿
ç®±ã®çžŠã»æšªã»é«ããå ¥ãããšããã¬ãŒã³ããå ãã®ã«å¿ èŠãªã©ããã³ã°çšçŽã®å€§ããïŒå¹ ãšé·ãïŒãèšç®ããŸããç®±ãæšªæ¹åã«ããã£ãšäžåšå ã¿ã瞊æ¹åã®äž¡ç«¯ãæããããããã£ã©ã¡ã«å ã¿ããæ³å®ããŠããŸãã çšçŽã®å¹ ïŒ 2 ÃïŒæšª ïŒ é«ãïŒïŒ éã代 çšçŽã®é·ã ïŒ çžŠ ïŒ 2 à é«ã ïŒ 2 Ã ç«¯ã®æã蟌ã¿å éã代ã¯ãäžåšãããšããã§ããŒãã§çããããã®éãªãéšåãç«¯ã®æã蟌ã¿åã¯ãç®±ã®äž¡ç«¯ãæããããããã®äœè£ã§ãã
èšç®äŸ
瞊30cmã»æšª20cmã»é«ã10cmã®ç®±ãéã代3cmãæã蟌ã¿å2cm ã®å Žå çšçŽã®å¹ ïŒ 2 ÃïŒ20 ïŒ 10ïŒïŒ 3 ïŒ 63cm çšçŽã®é·ã ïŒ 30 ïŒ 2 à 10 ïŒ 2 à 2 ïŒ 54cm â 63cm à 54cm 以äžã®çŽãçšæããŸã åžè²©ã®ã©ããã³ã°çšçŽïŒäŸ: 70cm à 100cmïŒã«åãŸããã©ããã確ãããã®ã«äœ¿ããŸãã
䜿çšäžã®æ³šæ
- é·ãã®èšç®ã¯ã䞡端ã«ç®±ã®é«ãåãã€ã®äœè£ããšããããšãã®ããç®å®ã§ãã端ã®åŠçã«ãã£ãŠã¯ã瞊 ïŒ é«ãçšåºŠã§ãå ããŸãã
- æã®ããçŽã¯ãæã®åããèããŠãå°ã倧ããã«çšæãããšå®å¿ã§ãã
- ç®±ã®è§ãæãã«å ããæãå ã¿ïŒãããŒãå ã¿ïŒãã§ã¯ãå¿ èŠãªçŽã®å€§ããã®èãæ¹ãç°ãªããŸãã
ãããã質å
ã©ããªèšç®åŒã䜿ã£ãŠããŸãã?
çšçŽã®å¹ = 2Ã(暪+é«ã)+éã代ãçšçŽã®é·ã = 瞊+2Ãé«ã+ç«¯ã®æã蟌ã¿åÃ2 ãšãããäžè¬çãªã©ããã³ã°ã®ç®å®åŒã䜿çšããŠããŸãã
éã代ã»ç«¯ã®æã蟌ã¿åãšã¯äœã§ãã?
éã代ã¯çšçŽãç®±ãäžåšããæã«ããŒãã§çããããã®äœåãªéšåãç«¯ã®æã蟌ã¿åã¯ç®±ã®äž¡ç«¯ããããã«æããããããã®äœè£åã§ãã奜ã¿ã«å¿ããŠèª¿æŽããŠãã ããã
ãã®èšç®ã¯æ£ç¢ºã§ãã?
ããã¯äžè¬çãªã©ããã³ã°ã®ç®å®åŒã§ãããå®éã®å ã¿æ¹(è§ã®åŠçããªãã³ã®æç¡ãªã©)ã«ãã£ãŠå¿ èŠéã¯å€å°ååŸããŸããå°ãå€ãã«çšæããããšãããããããŸãã