Question

The ratio of the areas of two similar polygons is 225:25. What is the ratio of their corresponding sides?

2:1

3:1

5:1

9:1

Answer 1

LOL that is not you in that picture

Answer 2

Ratio of areas = a^2: b^2
Ratio of sides = a:b

In this case...
Ratio of areas = (15)^2: (5)^2
Ratio of sides = 15:5
Ratio of sides = 3:1

Answer 3

Ok, I thought 3:1 as well, I will let you know..

Answer 4

Can you help me with one more tough question?

Answer 5

Two regular pentagons have areas of 20 mm² and x² - x mm². What values of x make the pentagons congruent?

4 and 5

4 and -5

-4 and 5

-4 and -5