Sing The Perimeter Song!

PERIMETER, PERIMETER, GOES AROUND AND ROUND;
ADD UP ALL THE SIDES AND THEN WRITE YOUR ANSWER DOWN;
ADD UP ALL THE SIDES AND WRITE YOUR ANSWER DOWN, DON'T FORGET
THE UNIT BECAUSE THEN I'LL MARK IT WRONG!

PERIMETER, PERIMETER GOES AROUND AND ROUND;
FIRST YOU ADD THE LENGTH AND WIDTH AND MULTIPLY BY TWO;
ADD THE LENGTH AND WIDTH THEN MULTIPLY BY TWO, BUT DON'T FORGET
TO PUT THE UNIT THEN IT'LL BE WRONG, THAT'S TRUE!    
The perimeter is the distance around an object or a shape. To find the perimeter, all you have to do is add up all the sides. 3+3+6+6= 18 ft.
                                   or
Add up two sides and then multiply by 2.
3+6=9 and 9x2=18 ft.