Answer:
c
Step-by-step explanation:
A circle of radius = 6 or diameter = 12 or circumference = 37.7 inches has an area of:
7.29676 × 10 -8 square kilometers (km²)
0.0729676 square meters (m²)
729.676 square centimeters (cm²)
7.29676 × 10 4 square millimeters (mm²)
2.81729 × 10 -8 square miles (mi²)