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Elena L [17]
3 years ago
14

Pls help me. Plus, working. Thank you​

Mathematics
1 answer:
Phoenix [80]3 years ago
7 0

Answer:

Total surface area=228cm²

Step-by-step explanation:

Area of bottom(parallelogram)=12×12=144cm²

area of 1 triangle=1/2×8×12=48cm²

area of 3triangles=48×3=144cm²

Total surface area=144+144=228cm²

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Step-by-step explanation:

x+y=32

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