Answer:

Step-by-step explanation:
Surface area ⇒ area of 2 triangles + area of 3 rectangles

Answer:
20
Step-by-step explanation:
16-12/4+3(6-2) subtract 6 and 2
16-12/4+3+4 divide 12 and 4
16-3+3+4 subtract 16 and 3
13+3+4 add all 3 numbers
13+7
20
Answer:
12
Step-by-step explanation:
16 divided by 4 is 4
8 + 4 : 12