Respuesta :

chrysanthemum
If you section off the 3x3 cube, you can find the areas of the now two figures separately and then add their areas together.

A = bh

A = 10(2)
A = 20

A = 3(3)
A = 9

Total A = 20 + 9
Total A = 29

Answer:
29 units²

Ver imagen chrysanthemum
iby909
10*2=20 3*3=9 20+9=29
it is 29