Question

A flagstaff 17.5 m high casts a shadow of length 40.25 m. The height of the building, which casts a shadow of length 28.75 m under similar conditions will be:

Answer 1

let the height of building = h

$\frac{17.5}{40.25} = \frac{h}{28.75} \\ \\ h= \frac{17.5}{40.25}*28.75 \\ \\ h=12.5\ m$

Height of building is 12.5m