Question

A person 3m tall casts shadow 4m. At the same instance a lamp posts a shadow of 4.8m Find height of lamp post.​

Answer 1

It is from Direct and inverse proportion

3m lamp post =4m casts shadow

x m lamp post=4.8m casts shadow

4*x=3*4.8

x=3*4.8/4

x=3.6 metres

So the lamp post 3.6 metres casts a shadow of 4.8 metres