12 the perimeter of a rectangle
12. the perimeter of a rectangle is 60 cm. the width is 12 cm more than the length. find the length
and the width

Length = 9 cm

Width = 21 cm

Step-by-step explanation:

Length = x

Width = x + 12

Perimeter = 60 cm

2 * ( length + width )  = 60

2 * (x + x +12) = 60

         2x + 12 = 60/2 = 30

                 2x = 30 - 12 = 18

                    x = 18/2 = 9

Length = 9 cm

Width = 9 + 12 = 21 cm

the answer is y = 11.54

hope this : )

answer4 to the second power is 16

and 4 to the third power is 64,