We can use the equation:
f = 3.25s
3.25 is the cups of flour used for every cup of sugar.
Where 'f' represents flour and 's' represents sugar.
The missing side length is 15 :]
explanation: the sides on ADEF are 3 times larger than the sides on AABC
hopes this helps :DD
My mind is pretty foggy on this but I know you have to set the up the equation like ?/220 = 45/100 and you have to multiply or divide something, I’m not really sure. I don’t remember anymore lol.