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vekshin1
3 years ago
14

Find the surface area

Mathematics
1 answer:
raketka [301]3 years ago
8 0

Answer:

Total surface area = 217 cm²

Step-by-step explanation:

Area of Triangle = 1/2*b*h

Area of Triangle = 1/2 * 7 * 12 = 42 cm²

There are four triangular surfaces in the prism = 4 * 42 = 168 cm²

Area of the base square = S² = 7 x 7 = 49 cm²

Total surface area = Area of the base square + Area of 4 triangular surfaces

Total surface area = 49 cm² + 168 cm²

Total surface area = 217 cm²

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