The answer is: " 122.65625 cm² " ; or, write as: " 122 [tex] \frac{21}{32} [/tex] cm² " .
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Note:
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The area, "A", of a circle:
A = [tex] \pi [/tex] * r² ;
in which: A = area of the circle;
[tex] \pi [/tex] = 3.14 ;
r = radius ;
To calculate radius, "r" = diameter/2 = 12.5 cm/2 = 6.25 cm .
r = 6.25 cm ;
So, to calculate the area, "A" of the circle:
A = [tex] \pi [/tex] * r² ;
Plug in the values to find the Area, "A" of the circle:
A = 3.14 * (6.25 cm)² ;
A = 3.14 * (6.25)² * cm² ;
A = 3.14 * 39.0625 * cm² ; Note that "39.0625" = "[tex] \frac{1}{16} [/tex]" .
A = 122.65625 cm² ; or, write as: " 122 [tex] \frac{21}{32} [/tex] cm² " .
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