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AlekseyPX
3 years ago
13

What is the surface area

Mathematics
2 answers:
belka [17]3 years ago
4 0
The answer is 144 :) sorry if i’m wrong btw
Sav [38]3 years ago
3 0

Answer:

Step-by-step explanation:

total surface area=3×(1/2×10×6.7)+1/2×10×8.7=3×(33.5)+43.5

=100.5+43.5

=144

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