# math

The length of a rectangle is twice its breadth. If the perimeter is 42cm, find:

1) the length

2) the breath

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1. P = 2L + 2W

42 = 2(2W) + 2W

42 = 6W

7 = W

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Ms. Sue
2. Let the breadth of rectangle be xm
Length _ 2xm
Perimeter_ 2 (x+2x)
_ 6x _42m
_3x _21m
On solving we get
x_7m
Length_ 14m
_ 14 x 7
Area_ 98 m²

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3. bakwas

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4. first one good

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