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What is the radius of a circle whose area is 154 square centimeters?

 Apr 16, 2015

Best Answer 

 #2
avatar+752 
+8

2*pi*r =154

pi* r    = 154/2

pi * r   = 77

22/7 * r = 77

r           = 77* 7/22

r           =  14/2

r           = 7//

so that. radious of that circle is 7 cm//

 Apr 16, 2015
 #1
avatar+128079 
+5

154 = pi * r^2      divide both sides by pi

154/pi = r^2        take the positive root of both sides

about 7 cm

 

  

 Apr 16, 2015
 #2
avatar+752 
+8
Best Answer

2*pi*r =154

pi* r    = 154/2

pi * r   = 77

22/7 * r = 77

r           = 77* 7/22

r           =  14/2

r           = 7//

so that. radious of that circle is 7 cm//

Sasini Apr 16, 2015

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