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8milka8
@8milka8
June 2022
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помогите пж!!!дам 20 б
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AlexHorion2016
2. BC = 4 см, AD = 8 см, угол ВАН = 45.
1) Т.к. угол BAH = 45, то BH = AH = (AD - BC)/2 = 2 см
2) S = 1/2*BH*(AD+BC) = 12
см^2
3.
AD = 4,8 дм = 48 см, BH = 25 см
1) BC = 0,36*AD = 17,28 см
2) S = 1/2*BH*(AD+BC) = 816 см^2
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Answers & Comments
1) Т.к. угол BAH = 45, то BH = AH = (AD - BC)/2 = 2 см
2) S = 1/2*BH*(AD+BC) = 12 см^2
3.AD = 4,8 дм = 48 см, BH = 25 см
1) BC = 0,36*AD = 17,28 см
2) S = 1/2*BH*(AD+BC) = 816 см^2