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Пошаговое объяснение:
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Пошаговое объяснение:
По условию : h=5 cm; r=3 cm
1. Формула площади осевого сечения :S=hd
d=2r=6, тогда S=5x6=30 сm²
2. Формула площади боковой поверхности : S=2πrh
Sбок =2x3,14x3x5= 94,2 cm²
3. Формула площади основания
S осн=πr²=3,14x3²=28,26 cm²
4. Формула площади полной поверхности
S= Sбок + 2Sосн
S=94,2 + (2x28,26)=94,2+56,52= 150,72