Respuesta :

idiiotology

Answer:

242 cm²

Step-by-step explanation:

The equation for surface area is 2 (wl+hl+hw). In this case, we just have to multiply the three values of 10 cm, 7 cm, and 3 cm.

(10 x 7) x 2 = 140

(10 x 3) x 2 = 60

(3 x 7) x 2 = 42

140 + 60 + 42 = 242