Rt△ABC中,∠C=90°并且AC=5cm,AB=13cm,则BC=_cm.
问题描述:
Rt△ABC中,∠C=90°并且AC=5cm,AB=13cm,则BC=______cm.
答
如图所示:
∵Rt△ABC中,∠C=90°,AC=5cm,AB=13cm,
∴BC=
=
AB2−AC2
=12cm.
132−52
故答案为:12.