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A circular pool has a radius of 15 feet. The family that owns the pool wants s to put up a circular fence that is 5 feet away from a he pool at all points. How much fence do they need?

Respuesta :

The pool itself has a radius of 15 ft
Add on the 5 ft buffer zone and we have a 15+5 = 20 ft radius

Circumference
C = 2*pi*r 
C = 2*pi*20
C = (2*20)*pi
C = 40pi 
C = 40*3.14
C = 125.6

Rounding up to the nearest foot, you need 126 feet of fencing

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