Question 437715
Given perimeter of rectangle P = 36 inches
Let L and W be the length and width of the rectangle.
Also given that width is four inches bigger than length.
Therefore W = 4 + L
We know that formula for perimeter of rectangle is P = 2(L + W).
                                           => 2(L + W) = P
                                           => 2[L + (4 + L)] = 36 
                                           => 2[L + 4 + L] = 36
                                           Divide both sides by 2
                                           => (4 + 2L) = 18
                                           Subtract 4 from both sides of equation
                                           => 4 + 2L - 4 = 18 - 4
                                           => 2L = 14
                                           Divide both sides by 2
                                              2L/2 = 14/2
                                               L = 7
Therefore length of rectangle is 7 inches.