Question

Find the perimeter of the image below:

32.1 units

35. 8 units

37.6 units

39.2 units

Answer 1

okay I already got the distances between each point from distance a to b i got d=sqrt of 85
from point b toc i got d= sqrt of 117 from point cd to i got d=sqrt of 37 from point d to e i got d=sqrt of2 and from point e to a i got d= sqrt 5

Answer 2

but im stuck from there

Answer 3

Wait, I get something different for distance from a to b

a = (2 , 0)
b = (-4 , 5)

distance between those I get \(\large \sqrt{61}\)

Answer 4

Point A to B - sqrt 85
Point B to C - sqrt 117
Point C to D - sqrt 37
Point D to E - sqrt 2
Point E to A - sqrt 5

Answer 5

let me check maybe i did something wrong

Answer 6

So I get

A to B = sqrt (61)
B to C = sqrt (89)
C to D = sqrt (25) = 5
D to E = 2sqrt(5)
E to A = sqrt(29)

Using the distance formula

\[\large d = \sqrt{(x_2 - x_1)^2 + (y_2 - y_1)^2}\]

Answer 7

thats the formula i used lol

Answer 8

Lol then hmm, maybe just a mess up of numbers then.

For example A to B

a = (2 , 0)
b = (-4 , 5)

\[\large d = \sqrt{(-4 - 2)^2 + (5 - 0)^2}\]
\[\large d = \sqrt{(-6)^2 + (5)^2}\]
\[\large d = \sqrt{36 + 25}\]
\[\large d = \sqrt{61}\]

Answer 9

omg i see what i did wrong lol

Answer 10

Haha tell me :P

Answer 11

instead of doing the x1 - x2 i put x1 and y1 lol
like i put the numbers d = ( 2-0 )2 + (-4 - 5) lolololol

Answer 12

lol gotta love the little mistakes :P

haha alright but are you good from there on? Or were you still confused on how to proceed?

Answer 13

confused on how to proceed lol

Answer 14

Lol alright...well we have all the distances now

All we need to do is add them together since each distance covers a part of the whole figure

so

\[\large \sqrt{61} + \sqrt{89} + 5 + 2\sqrt{5} + \sqrt{29}\]

Okay go :P

No just kidding...those look monotonous to add like that so lets approximate

\[\large 7.8 + 9.4 + 5 + 4.5 + 5.4\]

What do you get?

Answer 15

omg thank you so much

Answer 16

Lol Anytime :)

Answer 17

its 32.1 yaay lol

Answer 18

Well of course it is I could have told you that from the beginning ;P lol just kidding :D

Answer 19

haha :)