Answer:
Total surface area (Cube): 6a²
= 6*20*20
= 2400cm²
Total surface area (cylindrical): 2pi r (r+h)
= 7pi(3.5+20)
= 7*22/7(23.5)
= 22*23.5
= 517cm²
Total surface area of the fig: 2400-517cm²
= 1883cm²
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Verified answer
Answer:
Total surface area (Cube): 6a²
= 6*20*20
= 2400cm²
Total surface area (cylindrical): 2pi r (r+h)
= 7pi(3.5+20)
= 7*22/7(23.5)
= 22*23.5
= 517cm²
Total surface area of the fig: 2400-517cm²
= 1883cm²