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[tex]\begin{array}{rcl}V_{\text{tabung}}&=&\pi r^2t\\&=&\frac{22}{7}\times 14\times 14\times 28\\&=&22\times 2\times 14\times 28\\&=&17248\\\\V_{\text{bola}}&=&\frac{4}{3}\pi r^3\\&=&\frac{4}{3}\times \frac{22}{7} \times14\times 14\times 14\\&=&\frac{4}{3}\times 22\times 2\times 196\\&=&\frac{34496}{3}\\\\V_{\text{air}}&=&V_{\text{tabung}}-V_{\text{bola}}\\&=&17248-\frac{34496}{3}\\&=&\frac{51744-34496}{3}\\&=&\frac{17248}{3}\\&=&5749\frac{1}{3}\end{array}[/tex]