Homework Help: Circumference,Radius, Diameter

Posted by Missy on Monday, March 24, 2008 at 11:10pm.

What is the area of the circle if the radius is 2 cm?

A. 3 cm squared
B. 6 cm squared
C. 10 cm squared
D. 12 cm squared

I don't really know the answer to this one because I am not sure what the formula for area of a circle is. If I knew the formula the maybe I could figure the answer.

Circumference,Radius, Diameter - Ms. Sue, Monday, March 24, 2008 at 11:12pm
http://www.mathgoodies.com/lessons/vol2/circle_area.html
Circumference,Radius, Diameter - ~christina~, Monday, March 24, 2008 at 11:36pm
pi r^2
or
pi*r*r (multiply)

if you use 3 for pi then you will get your answer.
Circumference,Radius, Diameter - christopher, Friday, April 11, 2008 at 5:47pm
diameter
ghhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhfgfgggggggfhhhhhhhhhhhhhhggggggggggggggggbmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmaccccccccccccccccccccccccccccccccccaaaaaaaaaaccccccccccccccccccccccccccccccccccccccccccccccccccccccaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaakkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkk
Circumference,Radius, Diameter - Anonymous, Friday, March 4, 2011 at 7:05pm
the answer is 12 square

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