Mathematics
Junior High
Resolved
่ณๆฅใงใ๐๐ปโโ๏ธ ๅญฆๅใในใใฎๅฏพ็ญใงใๅใใใชใใชใฃใฆใใพใฃใใฎใง็ฅใใใใงใใใใฎๅ้กใง่กจใใใ2xใฃใฆใใชใใงใใ๏ผใx็งๅพใซ้ฒใใ ้ทใใใงใใ๏ผๅไฝใจใใฆใฏ2x๏ผcm๏ผใซใชใใพใใ๏ผ
ๅณใฎๅณใฎใใใซใ ใใใใไธ่พบใ8cm ใฎ็ด
่งไบ็ญ่พบไธ่งๅฝขใจๆญฃๆนๅฝขใใ ไธ็ด็ทไธใซไธฆใใง
ใใใ ๆญฃๆนๅฝขใๅบๅฎใใ ไธ่งๅฝขใ็ง้2cm ใง
็ขๅฐใฎๆนๅใซ็งปๅใใใ ใใฎใจใใ ็งปๅใๅงใ
ใฆใใ X็งๅพใฎ้ใชใฃใฆใงใใไธ่งๅฝขใฎ้ข็ฉ 8cm
ycmยฒ ใจใใฆใๆฌกใฎๅใใซ็ญใใชใใใ
(1) yใxใฎๅผใง่กจใใชใใใ
ใใใใซใชใใพใง๏ฝคไฝๅบฆ
TO mo8 10-
ใ็ง้2cm
8cm
(2) XใฎๅคๅใOxโฆ4ใจใใใจใใไปฅไธใฎใฐใฉใ็จ็ดใซ้ขไฟใ่กจ
ใใฐใฉในใใใใชใใ ใพใ ใฎๅคๅใๆฑใใชใใใ
SSCO 8cm
8cmใฎๆฐด็
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