Answer:
circumference of a circle = 30.473 cm
Explanation:
solution: given diameter- 9.7cm
so radius (pie) = d/2 = 9.7/2 = 4.85
circumference of a circle is 2(pie)r
circumference = 2 × 22/7 × 4.85
circumference = 30.47345 = 30.473 to 3 sf.
circumference of a circle = 30.473 cm