Ответ:
1 способ:
(4 + 2) × 7 = 6 × 7 = 42 (см^2)
2 способ:
4 × 7 + 2 × 7 = 28 + 14 = 42 (см^2)
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Ответ:
1 способ:
(4 + 2) × 7 = 6 × 7 = 42 (см^2)
2 способ:
4 × 7 + 2 × 7 = 28 + 14 = 42 (см^2)