Hi,

*Note: Perimeter is the distance "all away around"

For a rectangle, the Perimeter would be the SUM of lengths of ALL four sides

often stated as: P = 2*l + 2*w

.

Rectangle with top and bottom having length (n+10) and the sides each being n

P = (n+10)+ (n+10) + n + n = 4n + 20

or can be written

P = 2(n+10) + 2n = 4n + 20



*Note Area of a Rectangle is l*w

Rectangle with top and bottom lengths of (n+10) and is  n units  wide

A = (n+10)*n

 

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