Question

A farmer is building a pentagon(that is 5-sided) pen to hold his animals. each side has an equal length. What is the total perimiter of the chicken pen if the length of one side is 3√5 yards?(recall that the perimiter of each side of a shape or boundary.

Answer 1

Perimeter is the sum of all the sides, or 5 times the length of one side.

Answer 2

possible answers are 8√5 or 15√5 or 8√25 or 15√25

Answer 3

\[5 \times 3\sqrt{5} = 15\sqrt{5}\]

Answer 4

Make sure you understand how to multiply this stuff though... don't just grab the answer and go

Answer 5

Does that multiply expression make sense?

Answer 6

If the sides of the pen were 4 feet long, the perimeter would be 5 x 4 = 20 feet

Answer 7

some what could u make an example problem

Answer 8

You can add and multiply things with square roots in them sort of like they were variables like x or y or whatever. You can add any two terms that have the SAME thing in the square root. Like this:
\[2\sqrt{5} + 3\sqrt{5} = 5\]

Answer 9

just like 2x + 3x = 5x

Answer 10

In the same way, you can multiply a number times some square root term, just like it was a variable... so if 3 times 2x equals 6x, you could also have :\[3\times2\sqrt{5}=6\sqrt{5}\]

Answer 11

oh ok now what about this problem A father wants to build an octoganal (that is 8-sided) play pen for his toddler . Each side of the octogon has a length of 3√50 inches. What is the perimiter of the octogon ?

Answer 12

You tell me... :) Take a shot at it...

Answer 13

pretend "square root 50" is called "x"

so a side is 3x inches long

Answer 14

So um hold up let me think

Answer 15

how of ten do u get on here

Answer 16

Some :) Just depends.. I try to check daily, but I can't be on all day every day

Answer 17

If that "x" thing is confusing, just forget it... some people panic seeing the square roots, but if the "x" makes it worse, just go back to my examples earlier.

Answer 18

im in a recovery class and im trying to make up my credits so if u help me i can send you 50 dollors at the end of every week. You are my only hope in me being able to walk across the stage and recive my diploma so what do u say can u help me out

Answer 19

please

Answer 20

I can't do that... But I'm not your only hope... there are a bunch of good folks on here daily. You don't have to find me personally... just ask the questions and someone will help.

Answer 21

I'm happy to help, no charge, while I'm online though :)

Answer 22

so would the answer to the last problem be 3√400

Answer 23

Good try, but you multiply the 8 (# of sides) times the 3 in front of the square root, not times the 50 inside the square root.

\[8 \times3\sqrt{50}= 24\sqrt{50}\]

Answer 24

24√50 is not on the answer sheet

Answer 25

24√400

Answer 26

Hm... what else is on there?

Answer 27

Maybe there would be a answer \[96\sqrt{2}\]

Answer 28

Wait, you can simplify... sorry I missed this earlier...\[8 \times3\sqrt{50} = 24\sqrt{50} = 24\sqrt{(25)(2)}=(24)(5)\sqrt{2}=120\sqrt{2}\]

Answer 29

@MBSHAW95 update to our earlier perimeter problem... I missed a simplification