Question

What is the perimeter of the following polygon?

Answer 1

Use Pythagorus theorem to solve. Do you know how to do that?

Answer 2

In this case, you can also use pythagorus triples.

Answer 3

what are the numbers? I cant read them

Answer 4

A2+b2=c2?
I keep trying to plug it in but I cant get the right answer.

Answer 5

you need to divide 6 by 2.

Answer 6

The hight is 4 and the base is 6

Answer 7

the base is 3, the height is 4. What is the hypotenuse?

Answer 8

base is 3 because pythagorus theorem works only on 90 degree triangles.

Answer 9

so make it two right angle triangles. Now you have 3,4 and...?

Answer 10

Maybe, Am I suppost to add 3 an for to get x? or?

Answer 11

four*

Answer 12

\[3^2+4^2=x^2\]

Answer 13

you add the square of the base and the square of the height to get the hypotenuse so yes, you add them.

Answer 14

after you find x, this is the equation for the perimeter.

2x+6

Answer 15

Okay I get that, now how do I solve the equation, this is where I get stuck.

Answer 16

have you found x?

Answer 17

I thought it was 7, but i'm not very sure.

Answer 18

what is (3*3)+(4*4)=?

Answer 19

9 + 16 = 25

Answer 20

correct. now, 25 = x^2

how to find x? (I'll rewrite the equation)

x^2=25

Answer 21

12.5?

Answer 22

\[x^2=25\]

Answer 23

\[x=\sqrt{25}\]

Answer 24

when you transfer square over to the other side, it becomes a square root.

Answer 25

do you know what the square root of 25 is?

Answer 26

it's 5

Answer 27

yes. so now we know that x is 5.

Now, there are two hypotenuse. So the equation would be

2x+6 or x+x+6

Since now we know that x=5, plug it into either one of the equations.