Answer:
Step-by-step explanation:
You had the first part of the first question correct. The answer is 100:64
The sides of the squares
Area of e = 69% more than area of area of f
e^2: f^2 = ( 1 + 69/100 ) / 1
e^2 : f^2 = (1.69)/1 Take the square root of both sides
e:f = 1.3:1
