Question

The diameter of a circle is 1 cm.What is its circumfrence

Answer 1

π is the answer for the question

Answer 2

diameter of circle is 1 cm
so radius is 1/2 cm(0.5cm)
circumference of a circle is
$2\pi \: r$

2(π)(1/2) cm
π cm
3.14 cm (approx)