Question

The ratio of the areas of two similar polygons is 121:225. If the perimeter of the first polygon is 60 cm, what is the perimeter of the second polygon? Round to the nearest tenth

Answer 1

Any ideas?

Answer 2

Im guessing
121/60: 225/x then 121x=13500 13500/121 giving me 111.570 for the first part?????

Answer 3

Am I way off?

Answer 4

Your answer is correct.

Answer 5

So my answer is 111.6

Answer 6

units please

Answer 7

111.6cm :)

Answer 8

Good work

Answer 9

Thank you !

Answer 10

If two polygons are similar, the scale factor is the same as the ratio of the perimeters.

A theorem states that if two polygons are similar, the square of the scale factor is the ratio of the areas of the two similar polygons.

Answer 11

????

Answer 12

121/225 = (60/p)^2 where p is the perimeter of the larger polygon.

Answer 13

11/15 = 60/p
Solving for p does not render 11.6.
Perhaps, I made an error. @skullpatrol

Answer 14

111.6 thats rounded the original is 111.570

Answer 15

@Directrix I am unaware of this "theorem"

Answer 16

What theorem supports this statement --> 121/60: 225/x

Answer 17

Theorem: If two similar triangles have a scale factor of a : b, then the ratio of their areas is a^2 : b^2

Answer 18

@Directrix I FINALLY UNDERSTOOD YOU! Thanks for dealing with me, I've marked you best answer for all of them, and I became a follower.

@adillie Sorry for budding in, I just wanted to thank Directrix before I left.

Answer 19

Theorem: If two similar triangles have a scale factor of a : b, then the ratio of their perimeters is a : b.

Answer 20

The ratio of areas of two similar figures is the square of the scale factor.

The ratio of volumes of two similar figures is the cube of the scale factor.

http://www.northstarmath.com/sitemap/SimilarFigures.html

Answer 21

Have to close this question

Answer 22

81.81 was right

Answer 23

Thanks for letting me know. I did not want you to get an incorrect answer.