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marysya [2.9K]
3 years ago
7

Show your work! I really need the answer with the work!

Mathematics
1 answer:
anzhelika [568]3 years ago
3 0
The surface area is 216 cm sq.

Square base formula: length * width

One square base is 70 cm sq (7*10), another is 56 cm sq (7*8), and the final base is 42 cm sq (7*6). 

The height of both triangular faces is 4.8 cm

The two triangular faces are 24 cm sq each, 48 cm sq when added together.

Add all 5 numbers up to get 216.
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