Respuesta :

Answer:

C

Step-by-step explanation:

1 in= 2.54 cm

3in=7.62 cm

5in= 12.7cm

7in = 17.78 cm

7.62+12.7+17.78=38.1

Answer:

38.1 cm.

Step-by-step explanation:

3 in + 5in + 7in = 15in.

15 x 2.54 = 38.1