Respuesta :

Answer:

15 cm

Step-by-step explanation:

multiply the two numbers

Area of shaded region = Area of bigger circle - Area of smaller circle

[tex] = \pi( {5}^{2} - {3}^{2} ) \\ = 3.14 \times (25 - 9) \\ = 3.14 \times 16 \\ = 50.24 \: {cm}^{2} \\ [/tex]