Register

What is the circumference of a circle with area 81 \pi square inches?

What is the circumference of a circle with area 81 \pi square inches?
asked 13.4k views
2 votes
What is the circumference of a circle with area 81 \pi square inches?

asked
User Sergio Mendez
by
8.5k points

1 Answer

5 votes
Area = πr² ⇒
81π = πr² ⇒ 81 = r² ⇒ r = √81 = 9 in

Circumference = 2πr = 2*9*π = 18π in
answered
User Siham
by
7.2k points
← Prev Question Next Question →

No related questions found

Ask a Question
Welcome to Qamnty — a place to ask, share, and grow together. Join our community and get real answers from real people.

Categories

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
Link Copied!