Question

Shadow of a 7 M high flagstaff is 8.2 metre long what is the height of building with the shadow 20.5 M long

Answer 1

Hey,

Height of the flagstaff that casts a shadow of length 8.2 m = 7 m

Height of the building that casts a shadow of length 1 m = 78.2 m 
                                        
Height of the building that casts a shadow of length 20.5 m = 78.2×20.5 m = 17.5 m

∴ The height of the required building is 17.5 m.

HOPE IT HELPS YOU:-))