Question

13. A 15-m-long ladder is placed against a wall to reach a window 12 m height. Find the distance of the foot of the ladder from the wall. АВ 15 m 12 m C С AR xm ast the wall
​

Answer 1

Answer:

Answer

Let BC be the wall and AB be the ladder

Then, AB=15cm and BC=12m

Now, △ABC being right-angled at C we have

AB

2

=BC

2

+AC

2

AC

2

=AB

2

−BC

2

AC

2

=15

2

−12

2

AC

2

=81

Senidng power 2 from LHS to RHS it becomes square root

AC=

81

AC=9cm

The distance of the foot of the ladder from the wall is 9cm

Answer 2

Answer:

Thus, the distance of the foot of the ladder from the wall is 9m.