Question

4) An iron rod 5m long is placed against the wall in such a way that the foot of the rod is 3m away from the wall. Find how high the top of the iron rod reaches in the wall ?​

Answer 1

Answer:

2 metres

Step-by-step explanation:

Answer 2

Answer:

4cm

Step-by-step explanation:

Let, the length of rod be AB

Therefore,AB=5cm

And distance of rod from wall be CA

Therefore,CA=3cm

Now, In Triangle ACB applying Pythagoras theorem

Therefore, BC = AB^2 + AC^2

=BC = $\sqrt25- \sqrt9 cm$

Therefore, BC = 4cm

Hence, iron rod reaches 4cm to the wall.