Please help me..please dont answer if you dont know..i will give brainliest. thankyou, have a good day:)

Cylinder volume = pi x radius^2 x height

7) 3.14 x 8.8^2 x 4.7 = 1142.86

8) 3.14 x 4^2 x 2.5 = 125.6

9) diameter = 10 , radius = 5
3.14 x 5^2 x 4 = 314

10) diameter = 7.1 , radius = 3.55
3.14 x 3.55^2 x 1 = 39.57

The answer is "a"radius = 12.7 unitsdiameter = radius × 212.7 units × 2 = 25.4 units