Respuesta :

Answer:

The answer to your question is 13.2

Step-by-step explanation:

To figure out the answer to this equation you have to multiply by pi or 3.14

Answer:

C. 55.4

Step-by-step explanation:

Formula: A = π • r²

A= 3.14 • 4.2²

4.2 • 4.2

17.64 • 3.14

A=55.3896

A=55.4