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20 pts!! Find the total surface area of this prism.



___ square meters

20 pts!! Find the total surface area of this prism. ___ square meters-example-1

1 Answer

5 votes

Answer:

38m^2

Explanation:

We are solving the surface area of a rectangular prism that has been cut in half diagonally.

Our equation for this is
S = 2(lw + lh + wh)
Plug in our info
S = 2(10(1.5) + 10(2) + 1.5(2))
Work inside parentheses
S = 2(15 + 20 + 3)
S = 2(38)
S = 76
Our original surface area would be 76 if this were a regular rectangular prism, but its not! It's cut in half.
So, 76/2 is 38.

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