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A circle has an area of 81pi square units. What is the diameter of the circle A-18 B-9 C-162 D-none
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A circle has an area of 81pi square units. What is the diameter of the circle A-18 B-9 C-162 D-none
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Jan 27, 2018
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A circle has an area of 81pi square units. What is the diameter of the circle
A-18
B-9
C-162
D-none
Mathematics
middle-school
Balthazar Rouberol
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Balthazar Rouberol
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Area of circle (Formula) = πr^2
81π = πr^2
r^2 = 81
radius = 9
Hope this helps!
EEAH
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Jan 28, 2018
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EEAH
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The diameter of the circle is 18 unit which is A. Hope it help!
Ganapat
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Jan 31, 2018
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Ganapat
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