Question

S=2(ab+ac+bc), где a=5, b=4, c=10​

Answer 1

Answer:

S = 2 [(5 × 4) + (5 × 10) + (4 × 10)]

S = (10 × 8) + (10 × 20) + (8 × 20)

S = 80 + 200 + 160

S = 440

Step-by-step explanation:

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