设秆长x米，则城门高（x-1）米，根据题意得x2=（x-1）2+32，
解得x=5
答：秆长5米．
小东拿着一根长竹秆进一个宽为3米的城门，他先横着拿不进去，又竖起来拿，结果秆比城门高1米，当他把秆斜着时，两端刚好顶着城门的对角，问秆长多少米？
小东拿着一根长竹秆进一个宽为3米的城门，他先横着拿不进去，又竖起来拿，结果秆比城门高1米，当他把秆斜着时，两端刚好顶着城门的对角，问秆长多少米？
数学人气：487 ℃时间：2020-04-10 06:58:12
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