If the radius of a circle is 4.2 cm, compute its area and circumference..
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Area of a circle = πr2
So, area = π(4.2)2 = 55.44 cm2
Circumference of a circle = 2πr
So, circumference = 2π(4.2) = 26.4 cm
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Answer:
2×22/7×4.2
2×22×.6
44×.6
26.4
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