Mathematics
Junior High
ๆฑ่งฃๆๆ๐๐๐
17 ไธๅ็บ่ฒ็ฉบ็บ่ป็่ก่ป่ทฏ็ท่ณ่จๅ,ๅ่จญ็บ่ปๅจๅ็ฉๅ็ซ่่ฒ็ฉบ็ซไน้็่ก้งใ
่ทฏ็ท็บไธ็ด็ท,่ซไพ็
งไธๅ่ณ่จๆฑๅพ็บ่ปๅพๅ็ฉๅ็ซ่่ฒ็ฉบ็ซไน้็่ก้ง่ท้ข
ๅ
ฌๅฐบใ(ไปฅๅๆจไบๅ
ฅๆณๆฑ่ณๅฐๆธ้ปๅพ็ฌฌไธไฝ)
ๆตทๆ้ซๅบฆ(m)
24.1m
820m
ๅ็ฉๅๅ็ซ
่ฝ่ง1็ซ
95.5m
่ฝ่ง2็ซ
477m 538m
(ๆๅๅฎฎ็ซ)
1090m
264.3m
(่ฒ็ฉบ็ซ
299.3m
1108m
้ ญๅฐพๅ
ฉ็ซไนๅ็ด้ซๅทฎ
275.2
ๆฐดๅนณ่ท้ข(m)
ๅ
จ้ท4033m
2 ๅณๅ็บๅผๅฎๅฐๅญธๆ ก็่ทฏ็ทๅ(ๅฎไฝ:
ๅ
ฌๅฐบ),ๅทฒ็ฅๅผๅฎๆฏๅ้่ตฐ100ๅ
ฌๅฐบ,
ๅๅผๅฎๅพๅฎถ่ฃกๅฐๅญธๆ กๆๅฟซ่ฆ่ตฐๅนพๅ้
(ไธ่ฝ็ฉฟ่ถๅ
ฌๅ)?
ๅญธๆ ก
200 C
400
DECESS
B
300
A
1200
ๅผๅฎๅฎถ
ๅๆจๅนณ้ขไธๆ40,3)ใB(5,5)ใC(a,0)ไธ้ปใ่ฅAC=AB,ๅa็ๅผ็บ
ๅคๅฐ?
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