Respuesta :

Answer:

A. 15
B. 16

C. 21

Step-by-step explanation:

A. ((3x5)/2)x2 = 15

B. ((4x2)/2)x4 = 16

C. 5x5 - 2x2 = 21

a- 15 cm
b- 32 cm
c- 21 cm