Question

a 12ft by 15ft rectangular swimming pool has a 3ft wide no slip surface around it. what is the outer perimeter of the no slip surface

Answer 1

first draw a rectangle, 12 by 15. Then draw the perimeter all around it. This results in adding 6 ft to both the length and the width. This new rectangle is an 18 by 21 rectangle. 18 + 18 + 21 + 21= 78 ft perimeter