Respuesta :
Remember, the formula for the circumference of a circle is C=2πr^2
So, plug in 4 for the radius:
C=2π4^2
2*π*16=100.53
100.53 is the circumference.
So, plug in 4 for the radius:
C=2π4^2
2*π*16=100.53
100.53 is the circumference.
