The shadow of a 5-m-long stick is 2 m long. At the same time the length of the shadow of a 12.5-m-high tree (in m) is

SINCE BOTH the tree and the stick are forming shadows at the same time the sides of the triangles so formed, would be in same ration ∵ of AA similarity criterian

12.5 /5 = x / 2

⇒ x = 5

Shadow of the tree would be 5 m long.