mellycastaneda06
mellycastaneda06 mellycastaneda06
  • 26-04-2021
  • Mathematics
contestada

What is the clrcumference of a circle with a diameter of 9 Inches?

28 2/7 in

24 4/7 in

30 in

27 in
​

Respuesta :

charlenee
charlenee charlenee
  • 26-04-2021
28 2/7 in
explanation:
use the formula C=2pi(r)
d=2r
if diameter is 9 inches, we know the radius is 9/2 so r is 4.5
plug in 4.5
C=2(pi)(4.5)
C= 28.27 or 28 2/7 in
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