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dybincka [34]
3 years ago
8

Find the circumference of a circle if the area is 300 square centimeters.

Mathematics
2 answers:
Blababa [14]3 years ago
8 0
The answer is:  [C]:  61.38 cm  .
_______________________________________________

Note:  A = \pi *r²

300 = (3.14) * r² ;
______________________
Divide each side by "3.14" ;

r² = 300/3.14 ; 

r² =  95.5414012738853503 ;

√r² = √(95.5414012738853503) ;

r = 9.7745281867661188048

Circumference, "C" = \pi * d ;  (d = diameter = 2*r);
 
C = 2*\pi*r ;

C = 2*(3.14)*(9.7745281867661188048)

C = 61.384037012891226094144 ; which rounds to answer choice: 
                                                             [C]:  61.38 cm  .
________________________________________________________
Nikitich [7]3 years ago
8 0

Answer:

C 61.38cm

Step-by-step explanation:

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