Question

The radius of a circle is 28cm find its circumference

Answer 1

R=28cm

circumference=2πR^2

=2*(22/7)*28*28

=4926 *approx*

Answer 2

Answer:

$radius = 28cm \\ circumference \: of \: circle = 2\pi \: r \\ 2 \times \frac{22}{7} \times28 = 2 \times 22 \times 4 = 176$

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