Question

Danielle says the answer is "A". Is she correct? If she is,why? And if she isn't,what is the correct answer?​

Answer 1

She is incorrect. The correct answer is 285.74

Explanation:

A= (pi)r^2

Training wheel: A= (3.14)(3)^2=28.26in^2

Wheel: A= (3.14)(10)^2= 314in^2

314-28.26=285.74in^2