Question

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Answer 1

Ratio of e : f is 13 : 10

Explanation:

area of square E = e x e = e² cm²

area of square F = f x f = f² cm²

The area of square E is 69% greater than the area of square F

If the area of square F = 100%

then the area of square E = 100% + 69% = 169%

So the ratio of e² : f² = 169 : 100

square root both sides: e : f = √169 : √100

so e : f = 13 : 10