The circumference is pi times diameter, so put 25.12 over pi to get the diameter. That would be 8. Then divide by 2 to get the radius. That would be 4
No
There is not a common factor
The answer is going to be v= 4500ft3;S=900ft2
Since the exponent is negative, you move the decimal (2.0) to the left two spots leaving you with .02