Step-by-step explanation:
You have to do 7 x 4 because a square has four sides
It can be written as 12/100
or reduced to 6/50
or reduced even further to 3/25
Tanα=height/shadow
α=arctan(height/shadow)
α=arctan(292/131)°
α≈65.84° (to nearest hundredth of a degree)