Register
circle A has an area of 254.469 square units. What is the circumference of circle A? Round your answer to the nearest hundredth, if necessary.
170k views
2 votes
circle A has an area of 254.469 square units. What is the circumference of circle A? Round your answer to the nearest hundredth, if necessary.

User Bonney
by
8.0k points

2 Answers

6 votes

C=2πr
when area is given use this formulae C=2 sqrt (πA)=56.55
hope this helps
User Mike
by
8.1k points
4 votes
A = r² π
254.469 = r² π
r² = 254.469 : 3.14159
r² = 81.00866
r = 9.0048
C = 2 r π = 2 * 9.0048 * 3.14159 = 56.55 units
User Dmitri Farkov
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.

9.5m 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!