扇形统计图的特点作用

扇形统计图的特点作用 扇 1 C S a ×4 C=4a =× S=a×a 2 V: a: =× ×6 S=a×a×6 =×× V=a×a×a 3 C S a =(+)×2 C=2(a+b) =× S=ab 4 V: s: a: b: h: (1)(×+× +×)×2 S=2(ab+ah+bh) (2)=×× V=abh 5 s a h =×?2 s=ah?2 = ×2? = ×2? 6 s a h =× s=ah 7 s a b h =(+)×?2 s=(a+b)× h?2 8 S C ? d= r= (1)= ×?=2×?× C=?d=2?r (2)=××? 9 v: h: s; r: c: (1)=× (2)=+ ×2 (3)=× 4?2× 10 v: h: s; r: =×?3 1 × ? ? 2 1× ?1 ?1 3 × ? ? 4 × ? ? 5 × ? ? 6 7 8 × ? 9 ? ? × 1 C S a ×4 C=4a =× S=a×a 2 V: a: =××6 S=a×a×6 =×× V=a×a×a 3 C S a =(+)×2 C=2(a+b) =× S=ab 4 V: s: a: b: h: (1)(×+× +×)×2 S=2(ab+ah+bh) (2)=×× V=abh 5 s a h =×?2 s=ah?2 = ×2? = ×2? 6 s a h =× s=ah 7 s a b h =(+)×?2 s=(a+b)× h?2 8 S C ? d= r= (1)= ×?=2×?× C=?d=2?r (2)=××? 9 v: h: s; r: c: (1)=× (2)=+ ×2 (3)=× 4?2× 10 v: h: s; r: =×?3 ? ()?2 ()?2 ?(1) × ( ) ?(1) × ( ) 1 : ,: 1 ?1 ×(1) ?(1) , ,: ? × ? , : 1 ?1 ×(1) ?(1) 2 ? × ? ()? ()? ()? × ? ? × ? ? ( )?2 ( )?2 ? ×100% × ? ? ×100%(? 1)×100% × ? ×100%(1) ×× × ××(15%) × ? ? 21× ?1 ?1 3× ? ? 4× ? ? 5× ? ? 6 7 8× ? 9? ? × 1 C S a ×4 C=4a =× S=a×a = a 2 V: a: =××6 S=a×a×6 =×× V=a×a×a 3 C S a =(+)×2 C=2(a+b) =× S=ab 4 V: s: a: b: h: (1)(×+× +×)×2 S=2(ab+ah+bh) (2)=×× V=abh 5 s a h =×?2 s=ah?2 = ×2? = ×2? 6 s a h =× s=ah 7 s a b h =(+)× ?2 s=(a+b)× h?2 8 S C л d= r= (1)=×л=2×л× C=лd=2лr (2)=××л 9 v: h: s r: c: (1)=× =ch(2лrлd) (2) =+ ×2 (3)=× 4?2× 10 v: h: s r: =×?3 11? 12 ()?2 ( )?2 13 ?(1) × ( ) 14 ?(1) × ( ) 15 × ? ? 16 ? ×100% × ? 17 ? ×100%(? 1)×100% × ×× × ××(15%) 1=1000 1=10 1=10 1=100 1 =10 1=100 1 =10000 1 =100 1=100 1=100 () 1=1000 1=1000 1=1 1=1 1 =1000 1=1000 1 =1000 1=1 1=10 1=10 1=100 1=100 1=12 (31):1 8 (30):4 9 228, 2 29 365 , 366 1 =24 1=60 1=60 1=3600