Register
Login
Username
Password
Login
forgot your password?
Home
Forum
+0
Formulary
Maths
Help
Complex Numbers
Integral Calculus
Differential Calculus
Equations
Graphs
Linear Algebra
Number theory
Percent
Standard Functions
Statistics
Trigonometry
Unit Conversion
Units
About
Imprint
Privacy Policy
Terms of Service
Credits
Google+
Facebook
Contact Email
tyvlad012
Username
tyvlad012
Score
10
Membership
Stats
Questions
1
Answers
1
1 Questions
1 Answers
0
1217
3
+10
Suppose the area of a circle is 49π. What is its radius?
Suppose the area of a circle is 49π. What is its radius?
●
●
●
tyvlad012
Dec 27, 2014
#1
+10
+8
We know
K
=
π
r
2
, so
r
=
√
K
/
π
=
√
4
9
π
/
π
=
7
.
tyvlad012
Dec 27, 2014
