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31 votes
31 votes
If the area of a circle is 121 pi cm squared, what is the circumference of the circle?

User Martin Milan
by
2.5k points

1 Answer

21 votes
21 votes

Answer: 69.1

.

units

Step-by-step explanation:

First, find the radius

r

of the circle. Use the formula

a

=

π

r

2

area

=

π

r

2

121

π

=

π

r

2

121

=

r

2

11

=

r

User Samuli Asmala
by
3.1k points