Question

A rectangle has perimeter 18. If each side of the rectangle is doubled, the perimeter of the new rectangle is 36. What were the dimensions of the original rectangle?

Answer 1

Whatcha thank boi?

Answer 2

GIRL xD i dunno ;-;

Answer 3

think*

Answer 4

ok, what does it mean to double?

Answer 5

2

Answer 6

ok, 18*2=??

Answer 7

36?

Answer 8

mmm-k, iws dis a test?

Answer 9

LOL xD nawh i dont have the guts to post one :P btw ru gonna help? im lost

Answer 10

that bit of info is already there?

Answer 11

ok,
Let l be the length and w the width of the original rectangle. Then\[2l+2w=18\]

Answer 12

huh????

Answer 13

\[2(2l)+2(2x)=36\]

Answer 14

where are you getting this from? im confused

Answer 15

thats not the answer?

Answer 16

hmm

Answer 17

i is too

Answer 18

@Zarkon ?

Answer 19

did you make this problem up?

Answer 20

nope

Answer 21

well...it does not have a unique solution

Answer 22

hmm...thats weird i'll ask my teacher about this one thanks :)

Answer 23

I can give you two examples

rectangle 1...L=5,W=4, 5+5+4+4=18, 2*5+2*5+2*4+2*4=36

rectangle 2 ...L=7,W=2, 7+7+2+2=18, 2*7+2*7+2*2+2*2=36

both work

Answer 24

O_O wuw so the idea of the problem is to do a bunch of math and try to get 36 using numbers?

Answer 25

no...not a lot of math...I can give you all the possibilities really easily

L=x
W=9-x
then\( L+L+W+W=x+x+9-x+9-x=18\)
\(2L+2L+2W+2W=2x+2x+(18-2x)+(18-2x)=36\)

pick for favorite value for x (0<x<9)