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

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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

Answers

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

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