Question

the radius of a circle is 3.5cm, find its circumference​

Answer 1

Answer:

22cm

Step-by-step explanation:

radius= 3.5cm

• circumference= 2πr
• c= 2×22×3.5/7
• c= 44×35/70
• c= 44×5/10
• c= 44/2
• circumference= 22cm

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Answer 2

$circumference \: = 2\pi \: r \\ = 2 \times \frac{22}{7} \times 3.5 \\ = 2 \times 22 \times 0.5 \\ = 22cm$