The Roman Colosseum is an ellipse with major axis 620 ft. and minor axis 514 ft. 1.Find a², b², c² and the distance between the foci of the ellipse (2c). a² = * 2c = below. 2) A formula for the approximate circumference of an ellipse is C = 2π a = 6² = b c²= a²+b² 2 where a and b are the lengths shown in the figure Use the circumference formula to find the approximate circumference of the Roman Colosseum. Round your answer to two decimal places.