Respuesta :

Answer:

18

Step-by-step explanation:

r=a/2

r=36/3

r=18

Answer:

radius = 18 cm

Step-by-step explanation:

The circumference (C) of a circle is calculated using the formula

C = 2πr ← r is the radius

here C = 36π , hence

2πr = 36π ( divide both sides by 2π )

r = [tex]\frac{36\pi }{2\pi }[/tex] = 18

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