Question

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Answer 1

Answer:

3. answer option (c)

4. answer option (a)

Answer 2

Given radius = 7 cm

circumference = $\tt {2 \times \pi \times r }$

$2 \times {\frac{22}{7}} \times 7 \\\\\ \implies 2 \times {\frac{22}{\bcancel{7}}} \times {\bcancel{7}} \\\\\ \implies 2 \times 22 \\\\\ \implies 44 cm$