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willijav000
05.05.2020 •
Mathematics
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6(a+2b+3c)
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Ответ:
6a+ 12b+ 18c
Step-by-step explanation:
distribute the 6 to each term in the parentheses
6* a= 6a 6* 2b= 12b 6* 3c= 18c
Ответ:
C. π(2ft)²(10ft) + 1/3π(2ft)²(13ft-10ft)
Step-by-step explanation:
Given:
diameter = 4ft
length of the cylindrical part = 10ft
entire length of the silo = 13ft
Find the volume of the silo = volume of cylinder and volume of the cone
Formulas:
Volume of cylinder: πr²h
Volume of come: 1/3πr²h
2ft= radius
height =10
volume π×2²×10
radius 2ft
height 13-10=3ft
Volume= 1/3×π×2²×3 cube feet
Therefore the third answer is correct: C. π(2ft)²(10ft) + 1/3π(2ft)²(13ft-10ft)