Answer:
C = 47.1 cm
Step-by-step explanation:
Here C = 2*pi*r. Replacing pi with 3.142 and r with 7.2 cm, we get:
C = 2(3.142)(7.5 cm) = 47.13. Note that because r is given to 1 decimal place, your area should be expressed to 1 decimal place also: C = 47.1 cm
