Question

a boy of height 1.5 m is standing at a distance of 15m from the foot of a lamp post.
what is the height of the lamp post if the length of the shadow of the boy is 6cm.

Answer 1

Step-by-step explanation:

Assume lamp height = x

$\frac{15}{0.06} = \frac{x}{1.5}$

$x = \frac{15 \times 1.5}{0.06} = 375m$

Answer 2

Answer:

Let the height of the lamp post be h m.

Now , Triangle ABC and CED are similar.

So, BA/DE = AC/DC

h/1.5 = 21 / 0.06

h = 525 m.