Question

What are a) the ratio of the perimeters and b) the ratio of the areas of the larger figure to the smaller figure?
a. 5/2 and 25/4
b. 5/2 and 7/4
c. 7/2 and 25/4
d. 7/2 and 7/4

Answer 1

@sammixboo @Cicilybailey14 can you help?

Answer 2

Question, is the number assigned to the shapes already the perimeter?

Answer 3

or is it the area?

Answer 4

@Pagen13 Answer please

Answer 5

the perimeter i think?

Answer 6

ok well the for the first one, it's as easy as dividing the bigger one by the smaller one then simplifying

Answer 7

so, 30/12
15/6
5/2

Answer 8

Okay so the first one is 5/2 how do i find the second part?

Answer 9

well, I would go with logic.

Answer 10

We already eliminated 2 of those answers

Answer 11

a?

Answer 12

and we know tat the second shape is aprox twice the size as the smaller one

Answer 13

right. So the answer is A

Answer 14

I think so

Answer 15

Can you help with a couple more?

Answer 16

sure

Answer 17

are you a VLACS or FLVS student?

Answer 18

The area of a regular hexagon is 38cm2. What is the area of the regular hexagon with sides four times as long?
a. 152cm2
b. 228cm2
c. 304cm2
d. 608cm2
And no i am not

Answer 19

oh ok
Let's see... we want the area?

Answer 20

yes

Answer 21

Sorry, I didn't learn how to calculate the area of polygons yet.

Answer 22

but, just work your way back with the equation to find the length of one side of the hexagon then multiply that by 4 then re-calculate the area

Answer 23

Do you have the formula?

Answer 24

no... i am really bad at math

Answer 25

One sec, I'm working on it

Answer 26

I found it, you see that because these figures have to be similar (they are both regular hexagons), there exists a ratio of their areas consistent with their ratio of side lengths 1:4.

An area unit is just a length unit squared (A = k l^2), so the ratio between the areas is 1^2 : 4^2 or 1:32.

Answer 27

so, now just use cross multiplication to find the area!

Answer 28

\[\frac{ 38 }{ 1 } \frac{ x }{ 32 }\]
So, x = 32*38/1

Answer 29

wait sorry

Answer 30

the answer is d.

Answer 31

thank you

Answer 32

I made an error, the answer is still d but the ration of the area is 1:16 not 1:32

Answer 33

And NP! Glad I could help