Question

A ladder 20m long rests against a wall. if the foot of the ladder is 10m far from the wall , how hight up the wall does the ladder reach?​

Answer 1

Answer:

Step-by-step explanation:

Given,ladder length=20m

Distance of foot of ladder from wall =10m

Now by Pythagoras theorem

(H)^2=(P)^2+(B)^2

20^2=P^2+10^2

400=P^2+100

400-100=P^2

300=p^2

P=√300