The answer is: [C]: 61.38 cm .
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Note: A = [tex] \pi *r[/tex]²
300 = (3.14) * r² ;
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Divide each side by "3.14" ;
r² = 300/3.14 ;
r² = 95.5414012738853503 ;
√r² = √(95.5414012738853503) ;
r = 9.7745281867661188048
Circumference, "C" = [tex] \pi [/tex] * d ; (d = diameter = 2*r);
C = 2*[tex] \pi [/tex]*r ;
C = 2*(3.14)*(9.7745281867661188048)
C = 61.384037012891226094144 ; which rounds to answer choice:
[C]: 61.38 cm .
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