Question

Given the perimeter of a rectangle and either the length or​ width, find the unknown measurement using the appropriate formula. A 1 ft ​-wide rectangular table has a perimeter of 12ft. The lengthlength of the rectangle is ?

Answer 1

P= 2(l+w)

12= 2(l+1)
12= 2l + 2
(12-2) / 2 = l

l= 5