Find the circumference of the pizza to the nearest hundredth.
circumference: about
in.

Answer:
approximately 56.55 inches
Step-by-step explanation:
circumference = 2πr
the radius of a circle (or pizza in this case)
is 9 inches
(because the diameter is 18 inches, and half the diameter equals the radius)
so the circumference is...
C = 2 × π × (9)
= approximately 56.55 inches