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Gemiola [76]
2 years ago
12

Someone please help me with this problem

Mathematics
1 answer:
iren [92.7K]2 years ago
7 0
Check the picture below.

so the rectangular prism, or that box, is really just 6 rectangles stacked up to each other at the edges, notice

front and back are just two 9x5 rectangles

left and right are just two 5x4 rectangles

top and bottom are just two 9x4 rectangles

get the area of all 6, sum them up, and that's the area of the box.

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