Question

what is the circumference of a circular plate of radius 10.5 CM

Answer 1

circumference =2πr

$2 \times \frac{22}{7} \times 10.5 \\ 44 \times 1.5 \\ 66answer$
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Answer 2

radios (r) =105/10
the circumference of a circular plate= 2 Pie r
2×22/7×105/10
=66cm^2