Question

A ladder of length 17 m is placed such that its foot is 8 m far from a vertical wall of hieght100 m.How high the ladder can reach on the wall?

Answer 1

by using pythogores theoram

[17]2=[8]2+[x]2

[x]2=[17]2-[8]2

[x]2   =289-64

 [x]2  =225

x= root of 225

x= 15m

Answer 2

Answer:

(17)squre =(8)2+(x)2

289=64+(x)2

289-64=(x)2

225=(x)2

squre of 225 is 15 .

Ans.15m