Hexagonal 3468

The box of a regular hexagonal prism is 4 cm high, and the lid has sides 20 cm long. How much cardboard is needed to make it? (No part is double)

Correct answer:

S =  2558.461 cm2

Step-by-step explanation:

h=4 a=20  S1=3/4 a2=3/4 202=100 3173.2051  S2=6 S1=6 173.2051=600 31039.2305  S3=6 a h=6 20 4=480  S=2 S2+S3=2 1039.2305+480=2558.461 cm2

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