Answer:
30 square units
Step-by-step explananation:
First of all we need to know the formula to finding the perimeter of a rectangle which is:
P = 2 x L(Length) + 2 x h(Height)
12 and 3 are apart by 12 - 3
12 - 3 = 9
Then, we subtract 9 from 3 ( :
9 - 3 = 6)
To get 6 as our answer.
6 will be the width and 9 will be the length.
Now we solve for the perimeter by plugging in our values into our formula:
P = 2(9) + 2(6)
P = 18 + 12
P = 30 square units
