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What is the radius of this circle if the circumference is [tex]18 \pi [/tex] cm?

[tex]C = 18 \pi cm[/tex]

3 cm
9 cm
18 cm
36 cm

What is the radius of this circle if the circumference is tex18 pi tex cm texC 18 pi cmtex 3 cm 9 cm 18 cm 36 cm class=

Respuesta :

kphung76127
Circumference= 2*pi*r

2*pi*r= 18*pi

2*r=18

r=9

Final answer: 9 cm
Banabanana
Circumference of a circle: С = 2πr  

18π = 2πr  ⇒ r = 18π/2π = 9 cm

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