Answer :
The circumference can be calculated using the formula
C = 2πr
where r is the radius
From the question, diameter =10, this implies radius = 5
π is a constant which is equal to 22/7
substitute the values into the formula and evaluate
[tex]C=2\times\frac{22}{7}\times5[/tex][tex]C\approx31.4\text{ cm}[/tex]