梯形坡比1:0、3下底为300高400求上底 下底162高200单位厘米坡比1:0.3求上底
\u5df2\u77e5\u68af\u5f62\u9ad81.05m\uff0c\u4e0b\u5e951.2m\uff0c\u5761\u6bd41:0.5\uff0c\u6c42\u4e0a\u5e95\uff0c\u987a\u4fbf\u6c42\u4e2a\u516c\u5f0f\uff0c\u8c22\u8c22\u3002
\u9898\u610f\u5761\u6bd4\u4e3a1:0.5\uff0c\u5e76\u672a\u6307\u660e\u662f\u5176\u4e2d\u67d0\u4e00\u4e2a\u5e95\u89d2\u7684\u5761\u6bd4\uff0c\u6240\u4ee5\u5e94\u8be5\u4e24\u4e2a\u89d2\u7684\u5761\u6bd4\u90fd\u662f1:0.5\uff0c\u6240\u4ee5\u5e94\u8be5\u662f\u4e00\u4e2a\u7b49\u8170\u68af\u5f62
162\uff0d200\u00d70.3\uff1d102(\u5398\u7c73)
\u4e0a\u5e95102\u5398\u7c73\u3002
由AD：BE=坡比=1：0.3，得：
400：BE=1：0.3，
BE=120，
上底AD=BC-2BE=300-2×120=60。
绛旓細鐢盇D锛欱E=鍧℃瘮=1锛0.3锛屽緱锛400锛欱E=1锛0.3锛孊E=120锛屼笂搴旳D=BC-2BE=300-2脳120=60銆
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