Відповідь:
Пояснення:
1) S ΔAFN = 1/2 AN * FN = 1/2 * 6 * 6 = 18 ( см² ) ; бо AN = FN .
2) S ΔAFC = 1/2 * AC * FN = 1/2 * ( 6 + 18 ) * 6 = 12 * 6 = 72 ( cм² ) .
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Verified answer
Відповідь:
Пояснення:
1) S ΔAFN = 1/2 AN * FN = 1/2 * 6 * 6 = 18 ( см² ) ; бо AN = FN .
2) S ΔAFC = 1/2 * AC * FN = 1/2 * ( 6 + 18 ) * 6 = 12 * 6 = 72 ( cм² ) .