First we have to find the unit rate. We have to divide 4.5 by 10 which equals 0.45. So a 1 foot object casts a 0.45 foot shadow. Now we have to multiply 0.45 by 25 to find how feet a 25 foot object casts. 0.45*25 equals 11.25. So therefore a 25 foot object in this case will cast a 11.25 foot shadow
