Question 971461
circle a has a diameter of 9 inches, a circumference of 28.26 inches, and an area of 63.585 square inches. The diameter of circle b is 5 inches, the circumference is 15.70 inches, and the area 19.625 square inches. using the formula for circumference, solve for the value of pi for each circle.  use the formula for area and solve for the value of pi for each circle. 
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{{{C = pi*d}}}
{{{Area = pi*r^2}}}