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STatiana [176]
3 years ago
9

Look at this prism and its net. Rectangular prism with length labeled 5 meters, width labeled 7 meters, and height labeled 12 me

ters. Net of the same rectangular prism with the same dimensionsn labeled. What is the surface area of this rectangular prism?
Mathematics
1 answer:
kaheart [24]3 years ago
5 0
There will be three pairs of matching sides: one pair 5x7, one pair 5x12 and one pair 12x7. We can compute the are of each side (in pairs) and then add up the total:

A_{surf}=2\times(l \times w)+2\times(l \times h)+2\times(h \times w)
A_{surf}=2\times(5\times7)+2\times(5\times12)+2\times(12\times7)
A_{surf}=2\times35+2\times60+2\times84
A_{surf}=70+120+168
A_{surf}=358
A_{surf}=358m^{2}
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