Reyrey13
Reyrey13 Reyrey13
  • 19-04-2017
  • Mathematics
contestada

A circle has an area of 81pi square units. What is the diameter of the circle
A-18
B-9
C-162
D-none

Respuesta :

Аноним Аноним
  • 19-04-2017
The diameter of the circle is 18 unit which is A. Hope it help!
Answer Link
Аноним Аноним
  • 19-04-2017
Area of circle (Formula) = πr^2 
81π = πr^2 
r^2 = 81 
radius = 9 
 
Hope this helps!
Answer Link
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