Volume of the cone:
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 V1=(πr²h)/3
 V1=(π)(20)²(25)/3
 V1=10,471.97Â
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 Volume of the larger cylinder:
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 V2=πr²h
 V2=π(20)²(150)
 V2=188,495.55
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 Volume of the smaller rectangular prism:
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 V3=lwh
 V3=(65)(45)(120)
 V3=351,000
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 Volume of the larger rectangular prism:
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 V4=lwh
 V4=(55)(45)(150)
 V4=371,250
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 Volume of the rectangular pyramid:
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 V5=(lwh)/3
 V5=(55)(45)(35)/3
 V5=28,875
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 Volume of the smaller cylinder:
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 V6=πr²h
 V6=π(20)²(95)
 V6=119,380.52
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 Volume of the hemisphere:
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 V7=2πr³/3
 V7=2π(20)³/3
 V7=16,755.16
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 Total volume of the castle:
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 Vt=V1+V2+V3+V4+V5+V6+V7
 Vt=1,086,228.2