Answer:
r = 17 inches, C = 106.81 inches, A = 907.92 inches squared
Explanation:
Diameter is double the radius, and so we can halve this value to get r:
r = d/2
r = 34/2
r = 17 inches
Now we can use this value in the circumference formula, C = 2πr:
C = 2πr
C = 2 × π × 17
C = 106.81 inches
And finally, area can be calculated with the formula A = πr^2:
A = πr^2
A = π × 17^2
A = 907.92 inches squared
Hope that helps!