Question

Find circumference of circle if 6.28cm

Answer 1

circumference of a circle = 2×pie×r

Answer 2

$if \: 6.28 \: is \: radii$
$\pi = 22 \div 7 \: \: \: \: \: radii = 6.28$
$the \: circumference \: of \: circle \: = 2\pi r$
$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: = 2 \times 22 \div 7 \times 6.28$
$circumference \: = 39.4742857$



$if \: 6.28 \: is \: diameter$
$radii = diameter \div 2$
$radii \: is \: 3.14$
$2\pi r$
$2 \times 22 \div 7 \times 3.14$
$circumference \: is \: 19.7371429$

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