2 years ago

Please help see picture

Mathematics

1 answer:

Otrada [13]2 years ago

5 0

Answer:

688 cm²

Explanation:

Area of triangular prism = Base × Height + Length × (perimeter of base)

Here given:

Base: 6 cm

Height: 12 cm

Length: 20 cm

Perimeter of Base: (6 + 12.4 + 12.4) = 30.8 cm

============================================

Surface Area = 6 × 12 + 20 × (30.8) = 688 cm²

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