A circular plate has a radius of 12 inches. What is its area? What is the value of supermeter?

Choices

a) 263.02 cm ^ 2 and 57.49 cm
b) 452.39 cm ^ 2 and 75.39 cm
c) 263.02 in ^ 2 and 57.49 in ^ 2
d) 452.39 in ^ 2 and 75.39 in