过A作AP⊥X轴于P,过C作CQ⊥X轴于Q,
易得:ΔOAP≌ΔOCQ,
∴SΔABC=SΔOBA+SΔOBC
=1/2OB×2√2+1/2OB×2√2
=1/2×3√2×2√2+1/2×3√2×2√2
=12
∴1/2AC*BH=SΔABC=12,
AC*BH=24。
过A作AP⊥X轴于P,过C作CQ⊥X轴于Q,
易得:ΔOAP≌ΔOCQ,
∴SΔABC=SΔOBA+SΔOBC
=1/2OB×2√2+1/2OB×2√2
=1/2×3√2×2√2+1/2×3√2×2√2
=12
∴1/2AC*BH=SΔABC=12,
AC*BH=24。