Question

Find the circumference of a circle whose radius is 3.5 m​

Answer 1

$\huge\tt\colorbox{pink}{Answer}$

$circumference \: of \: circle = 2\pi \: r \\ r = 3.5m \\ circumference \: = 2 \times 3.14 \times 3.5 \\ = 6.28 \times 3.5 \\ = 21.98 \: {m}^{2}$

Answer 2

Answer:

$\sf \: Circumference \: of \: the \: circle \: is \\ \sf C=2πr \\ \sf =(2× \frac{22}{7}×3.5) \\ \sf=(21× \frac{22}{7}) \\ \sf=22 cm \\ \\ \sf \: Thus, \\ \sf the \: circumference \: of \: \\ \sf \: the \: circle \: is \red{ 22 cm}.$