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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