Since there is 5280 feet in a mile, 52800/5280 is 10. Therefore the height of the jet in miles is 10 miles.
The base is a square, therefore all the sides of the base are the same. This also means all the triangles have the same area.
10*10 = 100 cm^2 for the base
0.5*10*12 = 60 cm^2 for each triangle
100 + 4(60) = 340 cm^2
Answer:
236.6 I hope it helps you
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