Question

find the circumference and the area of a circle of radius 3.5 centimetre​

Answer 1

circumference=2pie r

area=pie r^2

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Answer 2

given,

r=3.5 cm

circumference = 2πr

= 2 × 22/7 × 3.5

= 2 × 22 × 0.5

= 44 × 0.5

= 22cm

area = πr²

= 22/7 × 3.5 × 3.5

= 22 × 0.5 × 3.5

= 22 × 1.75

= 38.5