Question

Cory is building an enclosure with recycled cardboard for her collection of model cars. Her design is as shown below:

Two six sided L-shaped polygons JKLMNH and ABCDEF are drawn. AF makes a right angle with FE at F. BC makes a right angle with CD at C. JH makes a right angle with HN at H. KL makes a right angle with LM at L. Measures of sides of JKLMNH are, JK is 3 inches, JH is 6 inches, NH is 5 inches, NM is 3 inches, LM is 8 inches. In ABCDEF, DC measures 40 inches.

What is the length of side EF in inches?

15
25
30
45

Please someone help! I'm thinking it's b but i am not

Answer 1

i am not 100% sure. Thank you!

Answer 2

@563blackghost please help me!

Answer 3

@G33k please help me

Answer 4

@kittiwitti1 please help me

Answer 5

@amenah8 please help me

Answer 6

@arbyj please help me!

Answer 7

try tagging higher level users to help you.
also busy with a lot of chemistry and math work right now. sorry

Answer 8

do u know where i can find higher users? i really need help on this asap :/ ur higher level?

Answer 9

I am a higher level user but I'm busy, the scale is from level 1-100 so look for levels closer to 100.

Answer 10

ok thank you

Answer 11

@steve816

Answer 12

@ilovemath14 please help me

Answer 13

where do i find high people?

Answer 14

@legomyego180 please help me

Answer 15

oh here is a high level tutor, let him help you :p

Answer 16

ok

Answer 17

Hey July! :)

These two shapes are "similar".
The larger shape has exactly the same `proportions` as the smaller one,
but it has been blown up really large.

Basically it has been multiplied by some `scale factor`.

Answer 18

Try to look at two "matching" sides,
or corresponding sides as we call them.

How did we get from this 8 to the 40?
What did we multiply our 8 by?

Answer 19

we multiplied the 8 by 5

Answer 20

Good good good.
That gives us the scale factor for the entire figure.

Each side was multiplied by 5 to get this new larger shape!
That means this new side here will be 15,
because the 3 blown up 5 times is 15.