Question

If the similarity ratio of two similar octagons is 3 : 5, what is the ratio of the areas of the octagons?
A. 3 : 5
B. 5 : 3
C. 6 : 10
D. 9 : 25

Answer 1

3 : 5
just squares them, get
3^2 : 5^2 = ? : ?

Answer 2

@RadEn is right, all you have to do is take 3, then multiply it by itself, so what is 3 x 3? After that you multiply 5 by itself, so what is 5 x 5?
So basically here is an equation if you didn't understand what I put above...
3 : 5
3 x 3 : 5 x 5
? : ?