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Activity Discussion Math Rectangles

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• # Rectangles

Posted by on June 23, 2023 at 11:13 am
1. A rectangle has a length that is twice its width. If the perimeter of the rectangle is 36 units, what are its length and width?
replied 3 months, 1 week ago 3 Members · 2 Replies
• 2 Replies

Member
June 23, 2023 at 11:24 am
1

Let the width of the rectangle be x<div>Therefore, the length of the rectangle is 2x.</div><div>
</div><div>Given, the perimeter is 36 </div><div>
</div><div>Perimeter =2(w+l)</div><div>=2(x+2x)=36</div><div>⇒2(3x)=36</div><div>⇒6x=36</div><div>⇒x=6⇒ Width</div><div>2x=12⇒ Length</div><div>
</div><div>Therefore, the length of the rectangle is 12cm and width is 6cm.</div>

• ### Lucky

Member
June 23, 2023 at 4:16 pm
1

Let the length of rectangle is l and width is w …

Then according to the question ..

l = 2w..

Given..

Perimeter = 36 unit

We know that –

Perimeter = 2( lenth + width)

And l = 2w then..

36 = 2( 2w + w)

3w = 18

W = 6 and

l = 2*6

l= 12

Then lenth of rectangle of will be 12 and width of rectangle will be 6.

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