Question

the length of a rectangle is 5 times its width. if the perimeter of the rectangle is 60ft, find its area. need help again!

Answer 1

let l = length
w = width

perimeter = l + l + w + w = 60

it says length is 5 times its width so l is 5 times w

l = 5w

perimeter = 5w + 5w + w + w = 60

solve for w

Answer 2

then tell me what you got

Answer 3

i dont get it because dont you need to know what w is? thats where im confuded i dont know how to solve it..

Answer 4

that's why you solve for w. to get the value of w. make sense?

Answer 5

ok but why does 5 work into that?

Answer 6

because perimeter is l + l + w + w right?

Answer 7

ya

Answer 8

and it was said that length is 5 times its width so

l = 5w

i just put in that value of l into l + l + w + w

5w + 5w + w + w = perimeter

Answer 9

got it now?

Answer 10

soooo its just 5x5?

Answer 11

im guessing im wrong..

Answer 12

why is there a multiplication?

Answer 13

i just thought because it has to equal 60..

Answer 14

5w + 5w + w + w = 60

10 w + 2w = 60
12w = 60

solve for w

Answer 15

5?

Answer 16

right w is 5

Answer 17

because 12 divided by 60 is 5

Answer 18

now solve for l

Answer 19

what does the problem look like?

Answer 20

solving for l i mean

Answer 21

..... you there?

Answer 22

lol sorry..too many notifications i didnt notice you replied

Answer 23

remember that thing i said a while ago? length is 5 times its width

l = 5w

Answer 24

its fine haha ok then l is five?

Answer 25

not exactly...what's your w?

Answer 26

5

Answer 27

but if l=5w theres nothing to solve there

Answer 28

substitute 5 into w

Answer 29

so l equals 5 times 5?

Answer 30

Let the width be 'x'. then
given:l=5*x=5x
perimeter of a rectangle=2(l+b)
A/q,
2(5x+x)=60
10x+2x=60
12x=60
x=60/12=5
now plug the value of x in the l & w.
width=x=5
length=5*5=25
area=l*b
25*5=125 Ans.

Answer 31

@cdub353 gt it???????

Answer 32

yes @cdub353

Answer 33

so what would be l then?

Answer 34

ok ok ok this is making more sense now thanks to both of you!

Answer 35

are u asking to me @lgbasallote ??

Answer 36

25 and then 25x5=125

Answer 37

yup

Answer 38

now you got it ^_^

Answer 39

thank you!

Answer 40

yw:)

Answer 41

sooo now i have a slope question

Answer 42

lol =)) post it as a new question. youll get more help that way

Answer 43

ok haha