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вирішити задачку: D
- Sосн = ADsinA = 16 * 3/2 = 83
OS = 1 / 2AD = 1/2 * 4 = 2
Sбок = 1 / 2P * SE = 1/2 * 16 * 22 = 162
SполSосн + Sбок = 83 + 162
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