Answer:
267.0075429 cm cubed.
Explanation:
The formula for the volume of a sphere is 4/3 * pi * r^3. So, the volume of a single marble is...
4/3 * (22/7) * 0.54^3
= 88/21 * 0.157464
= 0.6598491429
Multiply that by 50 and you get 32.99245715 cm cubed.
The capacity is 350 cm cubed, so 350 - 32.99245715 = 267.0075429 cm cubed of water is needed to fill up the container.