Answer :
Assumed it is a cuboid.
Total surface area = 2(6 x 20) + 2(20 x 4) + 2(4 x 6)
Total surface area = 240 + 160 + 48
Total surface area = 448 cm²
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Answer: Total surface area = 448 cm²
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Total surface area = 2(6 x 20) + 2(20 x 4) + 2(4 x 6)
Total surface area = 240 + 160 + 48
Total surface area = 448 cm²
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Answer: Total surface area = 448 cm²
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