Measuring 25811

Calculate the surface of a block measuring 1 m, 2 m, and 3 m.

Correct answer:

S =  22 m2

Step-by-step explanation:

a=1 m b=2 m c=3 m  S=2 (a b+b c+c a)=2 (1 2+2 3+3 1)=22 m2

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