Two men,starting at the same point,walk in opposite directions (相反方向) for 4 metres,turn left and walk another 3 metres.What is the distance (距离) between them?A.2 metres.B.6 metres.C.10 metres.D.12.5 metres
问题描述：
Two men,starting at the same point,walk in opposite directions (相反方向) for 4 metres,turn left and walk another 3 metres.What is the distance (距离) between them?
A.2 metres.B.6 metres.
C.10 metres.D.12.5 metres
答
10 metres
答
C
两人相背而行4米,又各左拐3米,构成两个三角形,斜边之和为10米