Question

Can someone help me ?

Answer 1

@ganeshie8

Answer 2

@ParthKohli

Answer 3

I wanna see if you can check my answer ?

Answer 4

If the question is within my limits, yes!

Answer 5

Find the perimeter of the image below:

Answer 6

A) 32.1 units <----- My answer

B) 35. 8 units

C) 37.6 units

D) 39.2 units

Answer 7

It's gonna take me a while to do this. Anyway, what did you do here?

Answer 8

AE = sqrt(2^2 + 5^2)

Answer 9

what does this "^" symbol mean?

Answer 10

DE = sqrt(2^2 + 4^2)

Answer 11

^ means exponent.

Answer 12

ohh ok but of what though

Answer 13

\[2^{2}\] = 2^2

Answer 14

ohhh ok thanks @kurtsloane

Answer 15

2^2 is \(2^2\).

Answer 16

Yup.

So just use the distance formula.

Answer 17

ok give me a second

Answer 18

The perimeter of the figure is AE + ED + DC + CB + BA. Find each individually.

Answer 19

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

Where x_1,y_1 is the x,y coordinate of point A and x_2,y_2 is the x,y coordinate of point B, and the distance is from A to B.


If you find the coordinates of all the vertices and then plug them into this formula (the distance formula) you will find all of the distances. Then, sum them up. This is just as ParthKohli said but I've typed the formula if you are having trouble seeing it.

Answer 20

Just in case you have trouble of seeing the origin of the said formula, this corresponds to the Pythagorean Theorem.

Answer 21

A good way to remember this is to tell yourself "the square root of the sum of the squares". You will be using this over and over again throughout your math studies!

Answer 22

All right, let us see what you get now!

Answer 23

The part im confuse about is when PartKohli said "The perimeter of the figure is AE + ED + DC + CB + BA. Find each individually"

Answer 24

Im just confuse about that part

Answer 25

The perimeter is the sum of sides of a polygon. The sides are AE, ED, DC, CB and BA.

Answer 26

You can find AE, for example, by finding the distance between A and E. Are you getting it?

Answer 27

So A is (0,2) and E is (4,5)

Answer 28

Do I sum this up

Answer 29

A is (2,0).

Answer 30

So, the distance between A and E is?

Answer 31

Oops I typed it wrong

Answer 32

So do i plug in (2,0) and (4,5)?

Answer 33

into the formula

Answer 34

Exactly.

Answer 35

ohh ok give me a second to figure the answer is .

Answer 36

I got 14 im pretty sure thats wrong

Answer 37

I dont know what I did wrong ??

Answer 38

@ParthKohli

Answer 39

14 for what?

Answer 40

For A and E ?

Answer 41

Am I right ?

Answer 42

@kurtsloane

Answer 43

@ParthKohli

Answer 44

I attached an explanation of the pythag. theorem and its relationship to the distance formula. 14 for the distance between A and E is incorrect, but, look at this picture and I think you can figure it out. Let me know what you get!

Answer 45

19?

Answer 46

Tell me, what is x1 and what is x2?
Then, tell me what x2 - x1 is.
Then, tell me what (x2-x1)^2 is.

Answer 47

Idk what x1 is

Answer 48

Ughhhhh!!!!!!!!!! this all confusing

Answer 49

-_____-

Answer 50

Look at the drawing I attached!

Answer 51

I did

Answer 52

Can you tell me, if I give you this coordinate on the XY-plane (a graph), what is the x-value, and what is the y-value? (2,0)

Answer 53

Idk Sorry but I have to go. Thanks for trying to help me understand it. :) really appreciated

Answer 54

The distance from A to E is \[\sqrt{29} = \sqrt{4 + 25} = \sqrt{2^2 + 5^2} = \sqrt{(4-2)^2+(5-0)^2} = \sqrt{(x_2-x_1)^2 + (y_2-y_1)^2}\]

Answer 55

Do the same for all the points and then sum (add) all the answers together for the total perimeter!