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The area of a circle is 36π square centimeters. What is the diameter of the circle? A= πr2 A 6 B 9 C 12 D 18
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The area of a circle is 36π square centimeters. What is the diameter of the circle?

A= πr2
A 6
B 9
C 12
D 18

User Nico Shultz
by
8.6k points

2 Answers

4 votes
A= r^2 x pi the coefficient of pi is the radius squared so, take the square root of 36 which is 6 to get the radius and times it by 2 to get the diameter answer is C 12 hope this helps
User Ryan Mann
by
8.1k points
3 votes
formula of circle's area is S=πr²
so 36π=πr²
r²=36
r=6
diametr d=2r, r- radius
so d=2*6=12
Answer: C 12
User Tushar Tarkas
by
8.0k points
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