Circumference of a Circle

The circumference of a circle is two times pi times the radius of the circle. Assuming the radius is already stored in a variable

named radius, compute the circumference and store it in a variable named circumference.

$/$ Assuming radius is already defined and initialized

double radius $=10$; $//$ Example radius value

$//$ Calculate the circumference of the circle

double circumference $=2**$ Math.PI $**$ radius; $//$ Use the formula to calculate circumference

$//$ Display the result

System.out.println$("$Circumference of the circle: $"+$ circumference$)$;

Test Results:

You're using a variable named circumference.

$\backslash$times Compilation error: illegal start of expression, $\text{'}$;$\text{'}$ expected, $\text{'}$;$\text{'}$ expected, $\text{'}$;$\text{'}$ expected, $\text{'}$;$\text{'}$ expected

$\backslash$times Compilation error: illegal start of expression, $\text{'}$;$\text{'}$ expected, $\text{'}$;$\text{'}$ expected, $\text{'}$;$\text{'}$ expected, $\text{'}$;$\text{'}$ expected

$$ Compilation error: illegal start of expression, $\text{'}$;$\text{'}$ expected, $\text{'}$;$\text{'}$ expected, $\text{'}$;$\text{'}$ expected, $\text{'}$;$\text{'}$ expected