SOLUTION: the circumference of a circle is 14.5cm
a) calculate the diameter of the circle
b) calculate the radius of the circle
c) calculate the area of the cirle
Algebra.Com
Question 189686: the circumference of a circle is 14.5cm
a) calculate the diameter of the circle
b) calculate the radius of the circle
c) calculate the area of the cirle
Answer by user_dude2008(1862) (Show Source): You can put this solution on YOUR website!
a) calculate the diameter of the circle
C=2*pi*r
14.5=2*3.14*r
14.5/(2*3.14)=r
14.5/(6.28)=r
2.31=r
r=2.31
diameter: d=2*r=2(2.31)=4.62
-------------------
b) from part a) radius: r=2.31
-------------------
c)
Area:
A=pi*r^2
A=(3.14)(2.31)^2
A=(3.14)(5.3361)
A=16.755
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