The length of a rectangle is twice it’s width. If the perimeter of the rectangle is 42cm. What is the rectangles Length?

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Answer 1 · 2018-06-17T14:40:34

the length of the rectangle will equal 14, and the 2 lengths together will equal 28 .

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Answer 2 · 2018-06-17T16:40:20

$color(red)("Width = 7cm and Length = 14cm"$

Let us assume the width to be $x.$ and length to be $2x$

$"Perimeter" =42$

$=>2(l+b)=42$

$=>2(2x+x)=42$

$=>2(3x)=42$

$=>6x=42$

$=>x=42/6$

$=>x=7$

$therefore$ $color(red)("Width=7cm and Length=14cm"$

~Hope this helps! :)