Question

I really need some help it's hard to understand!

Answer 1

C you just add them divide by 2

Answer 2

Answer:

460

Step-by-step explanation

surface area is when you find the area of all the sides and add them together.

top:  12 x 10 = 120

botton: 12 x 10 = 120

front: 10 x 5 = 50

back: 10 x 5 = 50

left: 5 x 12 = 60

right: 5 x 12 = 60

460