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Find the surface area of the following triangular prism.

Please explain how you got the answer

Find the surface area of the following triangular prism. Please explain how you got-example-1

1 Answer

6 votes
Steps:
Find the 2D area of the two triangles:
- multiply 6 x 8 and divide it by 2 (this is the bottom triangle.)
** don't use 10 because it is the hypotenuse.
- 6 x 8 = 48
- 48 / 2 = 24 (you will need to use this twice since there are 2 triangles)

Now find the 2D area of the three rectangles
- first you have to convert 4 yd to feet.
**1 yd = 3 ft
~4 yd = 12 ft
-now multiply 12 x 10
- 12 x 10 = 120ft (use this 3 times since there are 3 rectangles)

Now add all those together:
120 + 120 + 120 + 24 + 24 = 408
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