Question

The formula for finding the perimeter, P, of a rectangle with length l and width w is given. P=2l+2w

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​Which formula shows how the length of a rectangle can be determined from the perimeter and the width?

Answer 1

The formula to determine the length of rectangle with perimeter and width is L =
`(P - 2W)/(2)`

Explanation:

Given as :

The perimeter of rectangle = P

The length of rectangle = L

The width of rectangle = W

∵ Perimeter of rectangle given as P = 2 × Length + 2 × Width

I.e P = 2 L + 2 W

Or, 2 L = P - 2 W

∴ L =
`(P - 2W)/(2)`

Hence The formula to determine the length of rectangle with perimeter and width is L =
`(P - 2W)/(2)` Answer