Question

find the radius of a circle whose circumference is 22cm​

Answer 1

circumference of circle = 2pi r = 22cm

2 × 22/7 ×r =22

44×r/7=22

then radius= 3.5cm

pleas mark as brainleast ...

Answer 2

$circumfrence \: of \: circle = 2 \times \pi \times r \\ 22 \: \: \: \: = 2 \times \frac{22}{7} \times r \\ 22 \: \: \: \: = \frac{44}{7} \times r \\ 22 \div \frac{44}{7} = r \\ 22 \times \frac{7}{44} = r \\ \frac{7}{2 } = r \\ r = \frac{7}{2} \\ r = 3.5cm$. plz mark as brainlist