Register
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
76.8k views
1 vote
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
← Prev Question Next Question →

Related questions

Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Other Questions

How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A dealer sells a certain type of chair and a table for $40. He also sells the same sort of table and a desk for $83 or a chair and a desk for $77. Find the price of a chair, table, and of a desk.
The cost of 5 similar digital cameras and 3 similar video cameras is 3213. Each video camera costs 4 times as much as each digital camera. John buys a digital camera and a video camera. How much does he
Link Copied!