the circumference of a circle is 31.4cm . find the radius and the are of the circle ? [take pie=3.14 ]
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Answer:
Step-by-step explanation:
Circumference= 2 x 3.14 x r = 31.4 cm
=> r= 5 cm
Area= 3.14 x 5x5 =3.14 x 25
=> 78.5 cm^2
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