Question

Find the perimeter of triangle CDE. Round to the nearest tenth.

Answer 1

use distance formula to find out CD, DE and CE. add all three sides.

Answer 2

ok, i don't remember the formula off the top of my head right now, can u plz right it down for me?

Answer 3

http://www.purplemath.com/modules/distform.htm

Answer 4

see the link.

Answer 5

thnx

Answer 6

I got 16 but that is not one of my answers

Answer 7

your answer should be
\[5+3\sqrt{5}+2\sqrt{10}\]

Answer 8

8+7

Answer 9

?

Answer 10

okay lets take this one step at a time.
what is the length of CD? use distance formula.

Answer 11

3.5 units

Answer 12

how did you get that?

Answer 13

i counted the units from C-D

Answer 14

that is not what you are supposed to do. You are supposed to use the distance formula.
I sent you a link, Did you bother to check it out?

Answer 15

yes but its hard

Answer 16

do you know Pythagoras theorem?

Answer 17

no sorry

Answer 18

and your teacher didn't teach you about distance formula or pythagoras theorem?

Answer 19

nope

Answer 20

then why did he or she assign this problem to you? You cannot possibly do this problem if you dont know pythagoras theorem.

Answer 21

i dont know just help me please

Answer 22

I can't. You wouldn't understand my solution even if I helped you unless you know the theory.

Answer 23

plz give me the answer if not shes gonna fail me plz

Answer 24

I already gave you the answer. scroll up. the answer is 18.02 units

Answer 25

thanks so much

Answer 26

oh well. hope she teaches you how to do the problem before assigning problems to you. You should ask your parents to speak to your teacher.
also, if you are interested in knowing how I got the answer and would like to learn the theory, let me know

Answer 27

ok, but b4 we end this can u help me with 2 more problems plz

Answer 28

post them in a separate thread.

Answer 29

k