## anonymous one year ago (06.04 MC) Find the perimeter of the image below: Figure ABCDE is shown. A is at 2, 0. B is at negative 4, 5. C is at 4, 10. D is at 8, 7. E is at 4, 5

1. anonymous

picture pls

2. anonymous

That's the pic idk how Ito do it another way I'm on a iPad

3. anonymous

32.1 units 35. 8 units 37.6 units 39.2 units

4. DanJS

the pink thing?

5. anonymous

this confuses me wits the picture

6. anonymous

can u screenshot it?

7. DanJS

are you familiar with calculating the distance between 2 points on a plane

8. DanJS

i think it is that 300px wide pink pic at the top. haha

9. anonymous

Yea it's a link to the pic

10. anonymous

screenshot pls :c

11. DanJS

They gave you the points for all the points... you have to add up the distances .. AB + BC + CD + DE

12. DanJS

A(2, 0) B(4, 5) C(4, 10) D(8 , 7) E(4 , 5) Do you know the distance formula for two points?

13. anonymous

No

14. DanJS

ill do AB , $AB = \sqrt{(B _{x}-A _{x})^2 + (B _{y} - A _{y})^2}$

15. DanJS

it is just the pythagoren theorem

16. anonymous

okay but I still don't know the answer

17. DanJS

$AB = \sqrt{(4 - 2)^2 + (5 - 0)^2} = \sqrt{2^2 + 5^2} = \sqrt{29}$

18. DanJS

that is one side AB length... need to calculate all of them that way... AB + BC + CD + DE

19. DanJS

oh and EA. forgot Perimeter = AB + BC + CD + DE + EA

20. DanJS

you good , or no

21. anonymous

I'm sorry I'm so confused they gave me choices

22. DanJS

yes, you have to do work to figure it out, understand the distance formula above, and calculate all 5 sides lengths to add to the perimeter of the shape..

23. DanJS

give er a go, ill check if you want

24. anonymous

Ok