Question

a ladder 20 m long rest against a wall.If the foot of the ladder is 10 m far from the wall,how high up the wall does the ladder reach?Give answer correct upto two decimal places​

Answer 1

Answer:

Step-by-step explanation:

By Pythagoras theorem,  

10²=8²+height upto which the ladder reaches²

100-64=height2²

36=height²

6m=height up to which the ladder reaches.

Answer 2

20m long 10m far from the wall