An object 4.2 feet tall casts a shadow that is 12.6 feet long. How long in feet would the shadow be for an object which is 20.4 feet tall?


A.12 feet


B. 6.8 feet


C.28.8 feet


D.61.2 feet

isn't this a ratio problem?

4.2/12.6 = 20.4/L

L=20.4*12.6/4.2