Question

a rectangle has length 15cm and perimeter Pcm which equation is used to find rectangle width​

Answer 1

Answer:

The equation for the perimeter of a rectangle is : P = 2L + 2W

You can rewrite that equation to solve for W

P+=+2L+%2B+2W

Subtract 2L from both sides

P+-+2L+=+2W

Divide both sides by 2

%28P+-+2L%29%2F2+=+W

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Now all you have to do is plug in your given values.

72+-+2%2A%2815%29%29%2F2+=+W

%2872+-+30%29%2F2+=+W

42+%2F+2+=+W

21+=+W

Answer 2

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