Question

Find the perimeter of the image below:

Figure QRSTU is shown. Q is at 2, 0. R is at 4, 5. S is at 8, 7. T is at 6, 4. U is at 10, 3.

25.8 units

26.1units

27.5 units

28.6 units
Can anyone please help me out with this question? I know i'm supposed to use the distance formula, but i'm not sure which coordinates I should plug in for the distance formula.

Answer 1

@Hero

Answer 2

@SolomonZelman please help! i need help asap

Answer 3

The attachment isn't working for me, I am sorry, but you will have to tag someone else -:(

Answer 4

I can type all the coordinates for you if you'd like i really need help asap and no one will reply as fast

Answer 5

well, yes if you want.

Answer 6

thank you so much! :D

Answer 7

but you have to do it like this,

side 1, (c,v) - (d,f) and side 2 3 4 etc

do you know what I mean ?

Answer 8

no what do you mean by c,v and d,f? don't you mean y2-y1 squared + x2-x1 squared?

Answer 9

@SolomonZelman

Answer 10

@Hero Anyone please help!

Answer 11

@jdoe0001 @AravindG

Answer 12

@Hero Can you pleaaaaaaaaaaaaaaaaaaaaaaseeeee help mee!!

Answer 13

@amistre64 please help me out with this question!

Answer 14

youre simply going to have to find the distance between 2 vertexes 1 by 1

Answer 15

Q to R
R to S
S to T
T to U
U to Q

Answer 16

and when i find them do i just add them together?

Answer 17

of course, since the perimeter is just the sum of the sides ...

Answer 18

if you can visually tell the slope between required points, then you can lessen the amount of calcuations

Answer 19

spose a slope is a/b

the distance is just square, add sqrt: sqrt(a^2 + b^2)

Answer 20

for example: R to S has a slope of 4 to 2; 16+4 = 20, so distance is sqrt(20)

Answer 21

T to U is 4 to 1, 16+1 = 17, distance is sqrt(17)

etc ....

Answer 22

I'm having trouble finding the slope of my coordinates though

Answer 23

over and up ....

Answer 24

Q to R, how many over and how many up?

Answer 25

5 up and 2 over

Answer 26

thats what you need, square, add, sqrt

Answer 27

so i do 7 squared which is 49 add them with the rest and sqrt everything?

Answer 28

not add square sqrt :)

5 and 2, square them to get 25 and 4, and them to get 29, distance is sqrt(29)

Answer 29

oh wooow i got it now! thank you so much for the help! :D if i have anymore questions is it ok if you help? You're awesome! lol

Answer 30

if im around and not busy sure

Answer 31

okay thanks :)

Answer 32

so for this question the answer is D right? 28.6?

Answer 33

@amistre64

Answer 34

Ami right? @amistre64

Answer 35

@texaschic101 Can you please check this for me? I got D as my final answer

Answer 36

id have to add them up :) the wolf helps

Answer 37

http://www.wolframalpha.com/input/?i=sqrt%282%5E2%2B5%5E2%29%2Bsqrt%284%5E2%2B2%5E2%29%2Bsqrt%282%5E2%2B3%5E2%29%2Bsqrt%284%5E2%2B1%5E2%29%2Bsqrt%283%5E2%2B8%5E2%29

Answer 38

just help me! @amistre64 i need it done asap!