Question

If the radius of a circle is 4.2 cm, compute its area and circumference.​

Answer 1

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

Answer 2

Answer:

Area of circle = π x r 2  

Area = 3.14 x (4.2) 2  

= 55.44 cm 2

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