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PechkinTHEpostmaN
@PechkinTHEpostmaN
July 2022
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snow99
1) Рассмотрим ∆ АDE:
AD = DC = 1/2 × AC = 1/2 × 16 = 8 см
S ade = 1/2 × AD × BH = 1/2 × 8 × 4 = 16 см²
2) Рассмотрим ∆ BEC:
DE = EC = 1/2 × DC = 1/2 × 8 = 4 cm
S bec = 1/2 × EC × BH = 1/2 × 4 × 4 = 8 cm²
ОТВЕТ: 16 см² ; 8 см²
4 votes
Thanks 2
Mihail001192
Verified answer
Sabc = 1/2 * AC * BH = 1/2 * 16 * 4 = 32 (см^2)
Sabd = Sbcd = 1/2 * Sabc = 1/2 * 32 = 16 (см^2)
Sbde = Sbec = 1/2 * Sbcd = 1/2 * 16 = 8 (см^2)
Sade = Sabd + Sbde = 16 + 8 = 24 (см^2)
Ответ: 24 см^2; 8 см^2.
1 votes
Thanks 0
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Answers & Comments
AD = DC = 1/2 × AC = 1/2 × 16 = 8 см
S ade = 1/2 × AD × BH = 1/2 × 8 × 4 = 16 см²
2) Рассмотрим ∆ BEC:
DE = EC = 1/2 × DC = 1/2 × 8 = 4 cm
S bec = 1/2 × EC × BH = 1/2 × 4 × 4 = 8 cm²
ОТВЕТ: 16 см² ; 8 см²
Verified answer
Sabc = 1/2 * AC * BH = 1/2 * 16 * 4 = 32 (см^2)Sabd = Sbcd = 1/2 * Sabc = 1/2 * 32 = 16 (см^2)
Sbde = Sbec = 1/2 * Sbcd = 1/2 * 16 = 8 (см^2)
Sade = Sabd + Sbde = 16 + 8 = 24 (см^2)
Ответ: 24 см^2; 8 см^2.