Question

Find the perimeter of the larger pentagon if the two pentagons are similar.

Answer 1

I wrote on side is 15ft

Answer 2

What information do you have about the pentagons?

Answer 3

http://www.twiddla.com/527982 I forgot to post it lol

Answer 4

You have corresponding sides of 18 and 24.
The ratio is 18/24
or
3/4
All sides would have this ratio.

Answer 5

what about the perimeter?

Answer 6

You find all the sides. Add up the sides and you get the perimeter.
For example small pentagon side is 12, big pentagon is x
Ratio of sides is 12/x
or [(4)(3)]/[(4)(4)]=12/16.
The side is 16.

Answer 7

i am a little confuse can u tell me again please

Answer 8

The sides have a ratio of 3/4
Take the one that is 15, the bigger one would be y
15/y=3/4. Solve for y. y=20. The other side is 20. I wrote it on your twiddla. Find all the sides.

Answer 9

I saw it that mean that i need to find both number in 2 sides

Answer 10

Well they are both 21, so just find one, the other is the same.

Answer 11

21/A=3/4 right then that how to get both side too

Answer 12

Right.

Answer 13

i got 28

Answer 14

You can check it. See if 21/24 breaks down to 3/4.

Answer 15

21/24=3/4?

Answer 16

24 can't be right.

Answer 17

why..

Answer 18

You made an arithmetic or algebra mistake. It is 28. Now you have all the sides of big pentagon. Add up all sides and that is the perimeter.

Answer 19

116

Answer 20

I leave it up to you. Good work.

Answer 21

thank you so much

Answer 22

:)