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vredina [299]
3 years ago
8

Find the surface area of the polyhedra pls!! show how you got the surface area ​​

Mathematics
1 answer:
Vinil7 [7]3 years ago
6 0

Answer:

The surface area of the lower rectangle is 20cm x 4cm= 80 square cm

the surface area of the two triangles is 12 square centimetres

the surface area of one of the top rectangular faces is 20×5= 100 square centimetres

the surface area of the other is 20×3= 60 square centimetres

80+12+60+100=252 square centimetres is the surface area of the polyhydron

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