Question

What is the approximate circumference of a semicircle with a radius of 12 centimeters?

Answer 1

to figure out the circumference of a circle you use the equation
\[C=\pi(d)\]
where C is circumference, d is diameter
diameter is equal to twice the radius length

Answer 2

I am not good with these types of problems....

Answer 3

http://www.bbc.co.uk/schools/gcsebitesize/maths/geometry/circlesrev4.shtml

Answer 4

explains it perfectly

Answer 5

circumference is perimeter

Answer 6

18.8 centimeters
37.7 centimeters
75.4 centimeters
150.7 centimeters

Answer 7

HELP!!!!!!