Two roads XY and YZ of 15 metres and 20 metres length respectively are perpendicular to each other. What is the distance between X & Z by the shortest route?
Options:	A) 35 metres	B) 30 metres	C) 24 metres	D) 25 metres	E) None of these
XYZ is a right-angled triangle   XZ =√15(2)+20(2)=√=625=25m   Answer 25 metres
<result>D</result>
Two roads XY and YZ of 15 metres and 20 metres length respectively are perpendicular to each other. What is the distance between X & Z by the shortest route?