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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?
Wiki User
∙ 13y ago
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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∙ 13y ago
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