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answer
1530 cubic centimetres( to 3 sf)

workings in the picture below:)
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gcantiga44

Answer:

1526.04

Step-by-step explanation:

Volume of sphere = 4/3πr³

Volume of hemisphere = 2/3πr³

Diameter = 18

Radius (r) = 18 ÷ 2 = 9

2/3πr³

2/3(3.14)(9)³

2/3(3.14)(729) = 1526.04

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