四川省宜宾2021-2022学年中考数学模拟试题含解析及点睛

《四川省宜宾2021-2022学年中考数学模拟试题含解析及点睛》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

2021-2022ὃᦪᔁ⚗1.ᔁὃḄஹὃஹὃ!ᑏᙠ⚪ᔁ⚪ᓱ&஺ᵨ2B)*ᔁ+,B!-ᙠ⚪ᓱ./0&஺ᩩ2ṹ45ᙠ⚪ᓱ6&7"ᩩ2ṹ45ᜐ"o2.<⌱>⚪?⌱@AB⚪ᫀDᵨ2B)*E⚪ᓱ&F/⚪G⌱⚗ḄᫀHIJ-KL᝞◤ᦋPᵨQRSTUDV⌱-ᐸXᫀ஺ᫀYZᙠ⚪ᔁ&஺3.[⌱>⚪\ᵨK⁐^_Ḅ`*ᡈb^*<ᫀ\ᑏᙠ⚪ᓱᔜ⚪Gᢣefgᑁ./0&L᝞◤ᦋPᐜᑜᣵlᩭḄᫀᯠDVᑏ&oᫀLYpᵨ)*-ᦋq஺Yᢥs&⌕u⚪~ᜧ⚪ᐳ12B⚪AB⚪4ᑖᐳ48ᑖ.ᙠAB⚪@Ḅ⌱⚗ᨵ⚗ᔠ⚪G⌕uḄ.1.Bᵨ⚣᳛ᭆ᳛''Ḅ?{@Ḅ⚣᳛ᑴ᝞¢Ḅᢚ¤¢ᑣᔠ¦{Ḅᨬᨵ¨ZḄ
A.ᙠ©ᜮஹ«ᑐஹ”Ḅ¯°B±²³@Ḅ«ᑐ”B.´µ¶ᙢᙳᒴḄº»☢½¾¿ᔣ&☢ḄJᦪ4C.ÁÂᣵᜧBÃḄÄÅᡫÇÈÉᒴDÊËÌÍÈÌÎ᪻D.дµᙳᒴḄÑÒ2ÓÔº☢Õ&Ö3Óº☢×Õ&2.ØÙஹᦑÛÜᡃÞÖᢇᡂáᐭ⌱ãä⍡æḄᦻᓄé_ØÙêØë6700000ì6700000ᵨíîᦪï⊤ñ/òA.6.7xl06B.6.7x10"c.6.7xl05D.0.67xl073.᝞¢ó¢2ôõᢚö¨s÷ᡂºø½ᢚùsDú☟”^.FḄ^
C./D.ü4.᝞¢1ஹ2ஹ3ᑖý⊤ñᵬஹÿஹ
ᵫAᙢᑮBᙢḄᵬḄA—»C—>BḄATD—ETF—B,ᐸEABḄ

1ḄA-I-J-K—B,ᐸJᙠABAJ
JB.⊤,ᑣ᪷1ஹ2ஹ3Ḅᦪᑨ!"#Ḅᜧ%ᐵ'(*123A.ᵬ=-=B.ᵬீ-ீC.-//ᵬD.ீ-ீᵬ5.᝞ᙠ1☢3ᙶ᪗'678BஹCḄᙶ᪗ᑖ:8B-3,1ஹC0,-1,;AABC<8C=>?┐AᔣCD90஺FGᑮIAiBiC,ᑣ8BJK8BiḄᙶ᪗L(*6.᝞IABCDBCḄ8MDᙊOBD"PQRSTUACVE8NA=60஺NB=100஺,BC=4,ᑣᡧXBDEḄ☢YZ[(*5A.-71B.—7CC.-71D.S7133997.y=m-1*]+3m⊤•S`aᦪᑣmbV()A.1B.-1C.0ᡈD.1ᡈ-18.defgh┐JᐰejkᐵV“mᨬopḄS⚗rstu”Ḅ]ᔁxyFzᑴ|⚣ᦪᑖ~Aᵫ7ᑡḄL

220§足羽王乒球毛密乓球球A.ᨬopᳫḄᦪᨬB.ᨬopᳫḄᦪLᨬopᳫᦪḄC.ᐰeᐳᨵ50kD.ᨬopᵪQḄᦪᓰᦪḄ10%9.ᙠ0,-2,5,-0.3ᦪḄᦪL(*.4A.1B.2C.3D.410.᝞ᙠᦪᨵ8O,A,B,CJKḄᦪᑖ:L(*a,b,c,AO=2,OB=1,BC=2,ᑣᑡḄL
AOBCr~~n■—A.|4=|c|B.ah>0C.a+c=\D.b-a-\11.᝞67ᦪḄ8AஹB⊤Ḅᦪᑖ:a,b,ᑡbᡂ¡ḄL(*--1-----i-----1-->50JA.|a+b|=a-bB.|a+b|=-a-bC.|a+b|=b-aD.|a+b|=a+b12.᝞67IADELAABC<8A⌮?┐CDᡠGᐸ8Dᙠ¤AC¥CD3a,BC¦DEUV8F,ᑡ§ḄL(*A.ZBAC=aB.ZDAE=aC.ZCFD=aD.ZFDC=a¨ஹ©ª⚪(¬ᜧ⚪ᐳ6%⚪%⚪4ᑖᐳ24ᑖ.*13.S§®¯Ḅ°±ᨵ5²ᳫ2³ᳫ´1µᳫ¶·◀¹⁐᜜¼ᐰ½j¾¿À᥎|Sᳫᑣ᥎|ḄL²ᳫḄᭆ᳛L.14.᝞AXABCDḄÄ"2,ᑖ:MAஹDᙊO2PQRTBDஹAC,ᑣ▢ÆÇᑖḄ☢Y

315.ᦪy=-x+bbᦪḄ1,2,ᑣbḄ"16.᝞$ᵫᜧ&'ᐰ)*Ḅ+,-./ᡂḄ.&12ᜓᵨ5⁐ஹ7⁐ஹ8⁐9:;<=+,-.ᑖ?@AᐸḄBC⁐ᑣADḄ+,-.@5⁐Ḅᭆ᳛$17.ᙊHḄI☢KL1,MN2,ᑣOḄP☢Q.STUVᶇᐔ18.᝞ᙠ*Z☢ᑁ\-N)]Ḅ+^._+,-.Ḅᩩ-aᔠcdᙠeᑣN1Ḅfᦪஹgh⚪Sjᜧ⚪ᐳ9=&⚪ᐳ78ᑖghlᑏnᦻpqrஹsrtᡈvwxy.19.6ᑖ᝞AB$஺஺Ḅ{LCD|஺O)ᑗ~C,|ABḄN~D.(1)sAADCS2XCDBCD,஺0KL.20.6ᑖᙠR3ABCNBAC=9T,D$BCḄE$ADḄ.AAF஻BCBEḄN~F.1sAAEFgZkDEB2sr-.ADCF$.3AC=4,AB=5,.ADCFDḄ☢Q.

4?@ABCDE@FᦻᓄIᦟKLMNOP“RᐺTUV᪥X”Z[\᪥]^_`abc100defVg“RᐺTU”⌱ijj"kᐰmnjefḄᡂoVg᦮ᳮrᑮsᑡuv᦮ḄFw⊤._yᑖᦪ{⚣}⚣᳛A60

5B70AOḄB#.AMḄ).27.12ᑖ=>?3ÅefḄÆᐰÇÈ\᪥_`?efn3ÆᐰÈÉj.¨BÊ?4ᑖefᡂo7rᑖᦪË᦮ᦪÌᑖ>100ᑖ=VgFwÍᑴFw⚣ᦪᑖϼÐ7Ñvᡂ=Òᡧ᝞ssᑡ⚪1A_Ḅ⚣ᦪaB_Ḅ⚣ᦪbÓ24,᪵ÕÖ×______,a>2n>஺E_ᡠᓰÚ>%3⊡ᐰ⚣ᦪᑖϼÐ4Äᡂoᙠ80ᑖ+DEᐰ᪥ᐳᨵ2000defÞwᡂoDEefᨵd.

6ὃhᫀஹ⌱⚪(jᜧ⚪ᐳ12=&⚪<&⚪4ᑖᐳ48ᑖ.ᙠ<&⚪;nḄ=⌱⚗ᨵ⚗$ᔠ⚪⌕Ḅ.)1ஹBூ
᪆௃᪷TUᙠ0.17▬ᓽᐸᭆ᳛P=0.17,w=⌱⚗Ḅᭆ᳛0.17ὅᓽ+hᫀ.ூ
௃gᙠ“¢ᜮஹ¤ᑐஹ¦”Ḅ¨©&r9:n¤ᑐḄᭆ᳛$:ᦑA⌱⚗┯®¯°ᙢᙳᒴḄ+,☢³´µᔣA☢Ḅᦪ$4Ḅᭆ᳛$‘M.17,ᦑB⌱⚗+6·¸ᣵᜧ&ºḄ»¼ᡫ¾¿ÀᒴÁÂÃÄÅ¿Ä5᪻Çᭆ᳛$,ᦑC⌱⚗┯É®¯ᙳᒴḄÊËÌ2Í+☢ÎAÏ3+☢ÐÎAḄᭆ᳛$ÑᦑD⌱⚗┯Oᦑ⌱B.ூÓ௃Õ⚪ὃÖ×ᑭᵨ⚣᳛Úᭆ᳛ᜧÛÜÝÞ⚣᳛ßà"ᓽᭆ᳛.⚣᳛=ᡠãäᦪ|åãäᦪæç.èéêëᭆ᳛ìí$g⚪ᐵï.2ஹAூ
᪆௃ðñòᦪóḄ⊤õ.íaxionḄ.íᐸlw|a|V10,n᦮ᦪ.ànḄ"÷⌕øùúᦪûᡂa÷&ᦪü×ýþÿnḄᦪḄᦪ.ᦪ
1nᦪᦪḄVInᦪ.ூ
௃6700000=6.7x1()6,ᦑ⌱Aூ௃⚪ὃ!"#ᦪ$Ḅ⊤&'$.!"#ᦪ$Ḅ⊤&()*axionḄ()ᐸ,10a|VlO,n*᦮ᦪ⊤&ᐵ/⌕112aḄ34nḄ.

73ஹAூ᪆௃ËÐmḄß☢POBàk☢Ḅᱯ#Bâãäâ◞æËÐçºூ௃©æËÐmḄß☢POᐳᨵèæ☢ᐸB☢“é”ê☢“ὃ”àk☢“Ḽ”ê☢“☟”àk“î”ê☢“”àk.ᦑ⌱Aூ௃Õ⚪ð⌕ὃò?ᑭᵨËÐmóᐸ⊤☢POḄᱯ#⚪ô;ËÐmḄPOḄᱯõMç⚪Ḅᐵ÷4ஹAூ᪆௃ᑖ᪆ᵫḄᦪú⍝2ஹ3BḄ¦æüḄk0´ßgḄᡠ2,3BḄü´Ò1BḄüàý.þ,2üᐰÿ
3.᪷ᑖ᪆ᡠ
2AE=5E,AD=EF,DE=BE.'AE=BE=-AB,.AD=EF=-AC,DE=BE=~BC,.•.ᵬ=.222
…ஹJKJBBKAIAJ1J
3
1ᡠ=/!"=#=$'A3+B3=AB,.AI+SK=AC,IS+BK=BC,.•.ᵬ=%..,.ᵬ==%.ᦑ⌱A.)*+⚪ὃ./Ḅ12)34567Ḅឋ9:+⚪Ḅᐵ<3ᑭᵨḄ4?@ABḄᐵC.5ஹBூ᪆௃EF)AஹBG)CᢥIJ┐LᔣNO90஺QᑮḄST)UIVWXYAiBiC,ᓽᑮ)BST)[Ḅᙶ᪗.ூ௃

8᝞7ᡠ&AAiBCᓽ*:;<Ḅ=>(B?BiḄᙶ᪗*2,2.ூ௃⚪B⌕ὃCDEᣚG:;Eᣚ1᪷I⚪JKL?M⚪ᐵ/.7(ᡈ:;O<⌕Pᔠ:;Ḅ>RG7(ḄᱯTឋVᩭXL:;<ḄḄᙶ᪗.6ஹCூ
᪆௃ᑖ᪆XLᡧ(Ḅᙊ^>34_`ᓽabc⚪;eVZA=60°,ZB=100°,:.ZC=180°-60°-100°=20°,VDE=DC,.*.ZC=ZDEC=20°,:.NBDE=NC+NDEC=40°,஺40•g"4Sᡧ(DBEi----------------ik71•3609ᦑ⌱C._2l⚪ὃᡧ(Ḅ☢no)ஹ=>(ᑁ>G2ᳮrst⚪Ḅᐵ/#uᡧ(Ḅ☢no)s=3607ஹBூ
᪆௃ᵫkwxᦪḄ2ys|m|=lzm-lW஺ᡠ3m=-l,ᦑ⌱B.8ஹCூ
᪆௃ூᑖ᪆௃{|}'7᪷I}'7,~ḄᦪI⌲⚗ᑖ᪆ᓽaK.

9ூ௃`abL
ᵫ
1A.ᨬefgᳫḄiᦪᨬkᦑA⌱⚗┯noB.ᨬefpqᳫḄiᦪ3ᨬefᵪsiᦪḄtuᦑB⌱⚗┯noC.ᐰwᐳᨵ12+20+8+4+6=50z{|ᦑC⌱⚗$}oD.ᨬefᵪsḄiᦪᓰiᦪḄ00%=8%,ᦑD⌱⚗┯nᦑ⌱C.ூ)*௃+⚪ὃ./⚣ᦪᑖbL
bL
ᑮ⌕Ḅ5⚪3ᐵ<.9ஹBூ᪆௃᪷ᦪḄᑨᓽூ௃᪷ᦪḄ1ᦪᦪᨵtᓽ-2-0.1.ᦑ⌱B.10ஹCூ᪆௃᪷AO=2,OB=1,BC=2,a=-2,b=Lc=3,5ᑨᓽ:.ூ௃VAO=2,OB=1,BC=2,**•a=-2,b=1,c=3,.|aᵨc|,ab<0,a+c=\,ia=1-(-2)=3,ᦑ⌱C.ூ)*௃⚪ὃ.ᨵᳮᦪḄᜧS⚪Ḅᐵ<ᔠᦪ@.11ஹBூ᪆௃᪷
bVOVa,|b|>|a|,ᑨᓽ.ூ௃Vb|a|,:.a+b<0,/•|a+b|=-a-b.

10ᦑ⌱B.ூ)*௃⚪⌕ὃ./ᦪᦪḄᱯ¡TᵨSḄ¢@£⌕¤¥¦§.12ஹDூ᪆௃ᑭᵨNO¨©ឋᓽª«⚪.ூ௃VADAE3ᵫYBACNOᑮNBAC=NDAE=a,ZB=ZD,■:NACB=NDCF,.".ZCFD=ZBAC=a,ᦑA,B,C$}ᦑ⌱D.ூ)*௃+⚪ὃ.NOḄឋ9⚪Ḅᐵ<3¤¥¦§NO¨©ឋª«⚪¬ὃ®ὃ⚪¯.ஹ°±⚪²+ᜧ⚪ᐳ6⚪³⚪4ᑖᐳ24ᑖ.´13ஹ-8ூ᪆௃᪷ᭆ᳛Ḅ@£¸¹t)জᐰ»¼½Ḅᦪoঝ¿ᔠᩩÁḄ¼½ᦪÂoὅḄ"3ᐸÅ|Ḅᭆ᳛.ூ௃ᵫᐳᨵ8ᳫᐸÆᳫᨵ5ᑣÈÉÊË᥎Fᳫ᥎FÆᳫḄᭆ᳛3Í.ᦑ:ᫀ£.ூ)*௃+⚪ὃ./ᭆ᳛Ḅ@£᝞ÑÒÁᨵ“ÔÕ#Ö×ÒÁḄÕឋᐸÒÁAFØ"ÔÑÚÛÒmÁAḄᭆ᳛Ü4=—.n14ஹ2^3-Ýூ᪆௃Þ)FEFE_LAD)E,ß!|AE=AD=1AF,ᦑNAFE=NBAF=30஺U᪷âãᳮ@FEFḄäᵫSåAF=S22ᡧADF—SAADFFᐸ☢èU᪷S▢ê=2SᡧBAF—SåAF´ᓽFë

11ூ௃᝞
ᡠÞ)FEFE±AD)E,,•,$LABCDḄ7ä2,.•,AE=-AD=-AF=1,.,.NAFE=NBAF=30஺.E¥=Jj.22ஹ601x41rr2/T-•S(AF=Sᡧ(ADF—SAADF=---------X2x5/3=—7T—yJ5,:.s▢ê=2sᡧêBAF-sAF
=2X[=!^k]*|gkì]]=2*%-g!+´=26-3ᐔ•ூ)*௃+⚪ὃ./ᡧḄ☢èïðäLឋ9ḄTᵨᐵ<3᪷
ḄSñឋᑖ᪆⌕ὃ.{|ḄòóÕô.15ஹ3ூ᪆௃õ)²1,2öᐭ᪆ð:ᓽ.ூ௃õ)²1,2öᐭ᪆ðø=4+1,2=-l+b,b=3,ᦑ:ᫀ3ூ)*௃+⚪ὃ.Ḅ3VùᦪḄ
ú)ḄᐵCᐵ<3õ)²L2öᐭ᪆ð:.116ஹ-3ூ᪆௃û⚪ᑖ᪆LḄ$ü7ýÆ⁐Ḅᭆ᳛31ᦑ:ᫀ1.33ὃ)ᭆ᳛ïð.17ஹ4!ூ᪆௃᪷ᙊḄ☢ᓽ.ூ௃ᙊḄ☢r=l,1=2,

12ᑣḄ☢n*S«1=21=22=471.ᦑᫀ*47r.ூ௃⚪ὃCᙊḄ☢no)?ᵨc⚪Ạ⚪.18ஹ60°ூ
᪆௃ᐜ᪷I(Ḅᑁ>Go)XL(ᑁ>ḄRᦪᯠ<ᵨ(ᑁ>ḄRᦪ=>(ᑁ>ḄRᦪᓽa.ூ
௃(6-2)xl80°v6=120°,Zl=120o-60°=60°.ᦑᫀ*60°.ூ௃⚪ὃC(Ḅᑁ>Go)#(Ḅᑁ>Go)*5-2)X180஺l⚪Ḅᐵ/.=ஹ⚪(lᜧ⚪ᐳ9⚪ᐳ78ᑖ?ᑏLᦻ¤¥¦ஹ§¦¨©ᡈª«¬.19ஹ(1)®᪆(2)2ூ
᪆௃ᑖ᪆(1)✌ᐜ°±CO,᪷ICD஺Oᑗ³C,aK:NOCD=90஺ᯠ<᪷IABᙊOḄ}`aK:NACB=90஺,Iᑨ·LNCAD=NBCD,ᓽa¸K¹ADCs^CDB.(2)✌ᐜºCD*x,ᑣAB=32x,OC=OB=34x,ᵨx⊤&LODஹBDᯠ<᪷I4ADC(^ACDB,aK:ACCB=CDBD,IXLCBḄ»ᓽaXL஺O_`».e(1)§¦᝞7°±CO,VCD஺Oᑗ³C,...NOCD=90஺ABᙊOḄ}`:.ZACB=90°,...NACOh/BCD,

13VZACO=ZCAD,.NCAD=NBCD,ᙠ4ADCACDBZCAD=/BCDZADC=NCDB/•ADC^ACDB.(2)CDx,33!]AB=-x,OC=OB=—x,24VZOCD=90°,!0D=y/0C2+CD2=J(|x)2+x2=1.531.*.BD=OD-OB=-x--x=-x,442ᵫ(1)#ADC^ACDB,.ACCD•-----=------,CBBD2_xᓽ$%&—x2'CB=1,•*AB=7AC2+BC2=V5,...OO45.2678⚪:⌕ὃ=>ᑗḄឋABᵨDEFGHᳮḄBᵨ⌕JKLM.20ஹ(1)OPQ᪆S(2)OPQ᪆S(3)1.ூ᪆௃(1)ᑭᵨUVḄឋAE6ḄHWᑭᵨAASO'XYS(2)ᵫ(1)'AF=BD,Xᔠᩩ\]'AF=DC,ᑣOP_`aADCFUV_`abᑭᵨcdedaḄឋAO'AD=CD,O'_`aADCFfaS(3)ghDF,O'_`aABDFUV_`aᑣ]'DFḄᑭᵨfaḄ☢]'iᫀ.ூ௃(1)OP'AF//BC,

14ZAFE=ZDBE,YE4AZ)Ḅ6.AE=DE,ᙠ4AFE4DBENAFE=NDBE

15᪷yz{|ḄឋAஹ}ᢣᦪḄឋAஹᱯdḄedᦪ|ஹ᦮ᦪᢣᦪḄឋAஹ!᪷ḄឋAEḄHWᑖbᔠᓽூ௃=—(3.14—)+3.14+1—25+^^+(-1)=7-3.14+3.14-+1■-12-1=7C—+1-1=7,ூ67௃8⚪:⌕ὃ=>ᦪᓄᔜᦪ4⚪ᐵu.x=-522ஹ43¡=5ூ᪆௃¢£᦮ᳮᑭᵨ¤¥¦ᐗ¨]©ᓽ.ூ௃x+2y=-2জ¢£᦮ᳮ':7x_4y=Tlঝ,জx2+ঝ'9x=-45,ᓽx=-5,¬x=-ᐭজ'—5+2y=-2,3'y=—x=-5ᑣ¢£Ḅ’3>=—I2ூ67௃p⚪:⌕ὃ=!ᐗ%¢£Ḅ¨!ᐗ%¢£Ḅ¨ᨵ±²ᐭ¦ᐗ¨¤¥¦ᐗ¨᪷y⚪³⌱µᔠ〉Ḅ¨.23ஹ(1)·¸=¹ᦪ41()()¹S(2)ᙠᡧa»¼“ᐸ¿”ÁḄᙊÂd436஺S(3)⊡ᐰ⚣ᦪᑖÅc¼Q᪆S(4)Æ%Çᐰ᪥ÉÊ᰿Ì4▅ÎḄÏÐÑ960¹.ூ᪆௃

16(1)ᑭᵨÒ¤ÓḄ¹ᦪ◀DᐸᡠᓰḄ×Øᓽ]'Ù¸=Ḅ·¹ᦪS(2)ᵨ360஺D“ᐸ¿”ÁḄ¹ᦪᡠᓰḄÚᑖ×ᓽ]S(3)]'“ᐸ¿”ÁḄ¹ᦪஹ“ÛÜ”ÁḄ¹ᦪ⊡ᐰ»¼ᓽS(4)ᵨ·¹ᦪDÉÊ᰿Ì4▅ÎḄÏйᦪᡠᓰḄÚᑖ×ᓽ].ூ௃(1)Ýᩩa»¼'©Ò¤ÓḄ¹ᦪ20¹ᡠᓰḄ×Ø20%,!·¸=¹ᦪ=20+20%=100¹S(2)Ò¤ÛÜḄ¹ᦪ=100x40%=40¹Ýᩩa»¼'©Ò¤▅ÎḄ¹ᦪ30¹!“ᐸ¿”ÁḄ¹ᦪ=100-40-30-20=10¹ᡠᓰ×Ø=10+100=10%,ᙠᡧa»¼“ᐸ¿”ÁḄᙊÂd=360X10%=36஺(4)Æ%Çᐰ᪥ÉÊ᰿Ì4▅ÎḄÏÐÑ3200xÞ=960(¹).ூ௃p⚪ὃ=>ᩩa»¼ஹᡧa»¼ḄBᵨÝᩩa»¼ஹᡧa»¼ßàá⌕Ḅâã4äå⚪Ḅᐵu.24ஹ1.9æூ᪆௃ç⚪ᑖ᪆ᙠcdedaBCDᵫBCèsinBḄ|ᑭᵨ┦dedᦪHW]©CDḄᙠcdedaACD,ᵫNACDêᦪDECDḄᑭᵨ┦dedᦪHW]©ADḄᓽ.CDç⚪᪆VZBDC=90°,BC=10,sinB=—,.,.CD=BC«sinB=10x0.2=5.9,BC•.,ᙠRtABCDZBCD=90°-NB=90°-36°=54°,/.ZACD=ZBCD-ZACB=54°-36°=18°,.,.ᙠRtAACDtanZACD=—,AD=CD"anNACD=5.9x0.32=1.888R.9(æ)CDᑣᦋìᓭî☢`ïð¤ñᑖADḄÑ1.9æ.ὃ6cdedaḄBᵨ

1725ஹ(1)0.3,45(2)108°(3)6ூ᪆௃(1)✌ᐜ᪷yA£⚣ᦪEᐸ⚣᳛'·¹ᦪbᑭᵨ⚣ᦪஹ⚣᳛õöḄᐵ÷]'aஹb-,(2)8£Ḅ⚣᳛D360஺ᓽ]'iᫀS(2)ø᪛a¼ᓽúᡠᨵûüᐰñᑡþ©ᩭ
ាὅḄᭆ᳛ூ௃30(1)Ḅᦪ17+0.17=100()ᑣ1=1=03,*=100x0.45=45().ᦑᫀ0.3,45(2)360°x0.3=108°.ᡧ!"#8$%&ᡧḄᙊ()108஺.(3)+,-./Ḅᵬஹ2345AஹB,6᜜345CஹD,8᪛#:;21•.•ᐳᨵ12?@ABḄCDᵬஹ2E,3FG⌱ḄCDᨵ2?ᵬஹ2E,3FG⌱Ḅᭆ᳛-=-.126ூKL௃⚪ὃḄPᩩ!"#Rᡧ!"#ḄSᔠUᵨWX!"#
Y,Ḅ!"#ᑮ[⌕Ḅ]^P_`a⚪Ḅᐵc.ᩩ!"#Bdeᙢ⊤hijk⚗mḄᦪnᡧ!"#opq᧜sᑖᓰvḄwᑖxᜧz.26ஹ(1){|_᪆(1)0.ூ᪆௃(1)~KM⚔KᓽA(1)ᵫNAO8=45஺ABLOB,AAO8@Ὺ@Ὺo))᪷nᳮi04ḄᓽAiAMḄ.ூ௃(1)#᝞#ᡠh

18(1)ᵫ⚪AOB@ῪRtAAOB,OB=1,ᡠ~AO=V2OB=1V2MOAḄKᡠ~AM=1X172=V2ூKL௃⚪ὃ#@Ὺo))Ḅᑨᳮ@¡¢£¤¥-k)@¦§)P_(1)Ḅᐵc¨©408@Ὺ@Ὺo))P_(1)Ḅᐵc.27ஹ(1)20016(2)12612%(3)|_᪆(4)940ூ᪆௃ᑖ᪆(1)ᵫ¦A$Ḅ⚣ᦪxB$z24,A$Ḅ⚣᳛xB$z12%,ᑣA"³iḄᦪᯠµ"³aRbḄ(2)ᵨ360¸¹~D$Ḅ⚣᳛AᑮnḄ᪷nwᑖx¼R1AE$wᑖx(3)"³iCRE$Ḅ⚣ᦪµ⊡ᐰ⚣ᦪᑖÁoÂ#(4)ᑭᵨ᪵Å"vᵨ2000¹~D$RE$Ḅ⚣᳛RᓽA.⚪_᪆(1)Ḅᦪ24+(20-8%)=200,."=200x8%=16,஻=2(X)x20%=40,70(2)஺sᑖᡠ%Ḅᙊ()=360°x—ᓃ=126஺ᓽ஻=126,200E$ᡠᓰxÏ1-(8%+20%+25%+ᑶxl00%)=12%,(3)C$Ḅ⚣ᦪ200x25%=50,E$Ḅ⚣ᦪ200—16—40—50—70=24,⊡ᐰ⚣ᦪᑖÁoÂ#

19Ó4Ô2000x70+24=940,200.•.Å"ᡂÖ×ØḄ34ᨵ940.KL⚪ὃ⚣ᦪÓ᳛ÔᑖÁoÂ#ÙÚW⚣ᦪᑖÁoÂ#ḄBÛRᑭᵨ!"#ÜÝ]^ḄBÛᑭᵨ!"#ÜÝ]^Þ⌕ßàáâஹᑖ᪆ஹẆä!"#åBiæçḄᑨèR_`a⚪éὃᵨ᪵Å"v.