Step 1 :1. Diameter = \( 32 \mathrm{~mm} \)
Step 2 :2. Circumference = \( \pi \times d \)
Step 3 :3. Circumference = \( 3.14 \times 32 \)
Step 4 :4. Circumference = \( 100.48 \mathrm{~mm} \)