Answer:
(a) 18.84 cm
Step-by-step explanation:
The circumference of a circle is given by the formula ...
C = 2πr . . . . . for radius r
A circle of radius 3 cm will have a circumference of ...
C = 2(3.14)(3 cm) = 18.84 cm
_____
Additional comment
The area is ...
A = πr² = 3.14(3 cm)² = 28.26 cm²
The units of area are not cm, but are cm². This question asks for circumference. The shading may be misleading.
