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The perimeter of a rectangle is 2length +2 width.

the width is x the length is x+4. Plug into the equation

2(x)+2 (x+4)=20

2x+2x+8=20

4x=12

x=3

The width is 3 the length is 7 (3+4)

Area is length times width.

3(7)= 21.

the area is 21 centimeters

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โˆ™ 2010-06-07 04:34:18
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Q: The length of a rectangle is 4cm longer than the width If the perimeter of the rectangle is 20 centimeters what is the area of the rectangle?
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