Yahoo Answers: Answers and Comments for Finding dimensions of a rectangle? [Homework Help]
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From Anonymous
enGB
Sat, 20 Oct 2018 20:45:19 +0000
3
Yahoo Answers: Answers and Comments for Finding dimensions of a rectangle? [Homework Help]
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From coverdaler: The perimeter of two of the sides, the length ...
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Tue, 27 Nov 2018 07:09:17 +0000
The perimeter of two of the sides, the length and the width, is 45cm.
We can divide this by five (4+1, because four of the width is the same as one of the length), and find the length.
We then multiply the length by 4 to get the width.
Width 36cm
Length 9cm.

From lenpol7: P = 2(l + w)
But l = 4w
Substitute
P = 2(4w...
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Sun, 21 Oct 2018 15:24:15 +0000
P = 2(l + w)
But l = 4w
Substitute
P = 2(4w + w)
P = 2(5w)
P = 10w
90 = 10w
w = 9
Hence
l = 4 x 9 = 36

From charlatan: (l+b)*2=90
(4*b+b)*2=90
5b=45
b=9
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Sun, 21 Oct 2018 07:22:36 +0000
(l+b)*2=90
(4*b+b)*2=90
5b=45
b=9

From vulcan_alex: Let x = the width
Then 4x is the length
The p...
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Sat, 20 Oct 2018 21:01:08 +0000
Let x = the width
Then 4x is the length
The perimeter is than 2x + 8x or 10X
10x = 90 cm, so x = 9 cm. You can do the rest, at least I hope you can.
Algebra requires you to show all your work so I have done so.

From Mr. Smartypants: Let's use w for the width. The length is ...
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Sat, 20 Oct 2018 20:59:56 +0000
Let's use w for the width. The length is 4w.
So what is the perimeter of a rectangle? It's two times its width plus two times its length, right? So 2*w+2*4w, which is 2w+8w, which is 10w. So whatever the perimeter of the rectangle is, the width is 1/10 of it and the length is 4/10 of it.