We have two right triangles and three different rectangles.
The formula of an area of a right triangle:

l₁, l₂ - legs
We have l₁ = 20cm and l₂ = 21cm. Substitute:

The formula of an area of a rectangle:

l - length
w - width
We have:
rectangle #1: l = 22cm, w = 29cm

rectangle #2: l = 22cm, w = 21cm

rectangle #3: l = 22cm, w = 20cm

The total Surface Area of the triangular prism:

Answer:
Nitrous Oxide
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<h2>N. O</h2>
___________
Because ,the resulting Height would be Zero which won't be able to form a ∆ .
Ninety nine percent hope this helps!
Sorry if it didn’t :c
Answer:
d..
Step-by-step explanation:
For Question Number one
(2+10)²+4=148
Question Number two:
(6+5)×(8-6)=22