Answer: The circumference of the astrodome is 2,229 feet (approximately)
Step-by-step explanation: The diameter of the circular astrodome has been given as 710 feet and that makes its radius equal to 710 divided by 2 which equals 355 feet. To calculate the circumference of any circular figure we apply the formula;
Circumference = 2 x Pi x r
Where Pi is 3.14 and radius is 355
Circumference = 2 x 3.14 x 355
Circumference = 2229.4
The approximate length of the circumference is therefore 2,229 feet.