Answer:
Step-by-step explanation:
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-2x-7y=-4
5x+-7x=-2x
-9y+2y=-7y
1+-5=-4
So -2x-7y=-4
first sphere
volume = 113.142 m^3
2nd sphere
radius= 6 m
first cone
volume = 314.285 m^3
2nd cone
height=8 m
1st cylinder
volume=88 m^3
2nd cylinder
height=3m