Ответ:
12
Объяснение:
S1 = 1/2 × 8 × 3 = 12
S2 = 1/2 × 6 × x
3 × S1 = 3x
S1 = x
x = 12
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Ответ:
12
Объяснение:
S1 = 1/2 × 8 × 3 = 12
S2 = 1/2 × 6 × x
3 × S1 = 3x
S1 = x
x = 12