Length of stick = 10cm

Length of shadow stick= 8cm

Length of shadow of tower = hcm

In ΔABC and ΔPQR

<B = <C = 90° And <C = <R (Angular elevation of sum)

Then ΔABC ~ ΔPQR (By AA similarty)

So,

Or =

Or h= x 3000

Or 3750cm

Or 37.5m