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9.7: Композитні тверді речовини
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\(\begin{aligned} V_{cylinder}&= \pi 6^{2}(13)=468 \pi \\ V_{hemisphere}&=12(\dfrac{4}{3} \pi 6^{3})=144 \pi \\ V_{total}&=468 \pi +144 \pi =612 \pi \text{ in}^{3} \end{aligned}\) \(\begin{aligned}SA&...\(\begin{aligned} V_{cylinder}&= \pi 6^{2}(13)=468 \pi \\ V_{hemisphere}&=12(\dfrac{4}{3} \pi 6^{3})=144 \pi \\ V_{total}&=468 \pi +144 \pi =612 \pi \text{ in}^{3} \end{aligned}\) \(\begin{aligned}SA&=LA_{cylinder}+LA_{hemisphere}+A_{base\: circle} \\ &=2 \pi rh+\dfrac{1}{2}4 \pi r^{2}+ \pi r^{2} \\ &=2 \pi (6)(13)+2 \pi 6^{2}+ \pi 6^{2} \\ &=156 \pi +72 \pi +36 \pi \\ &=264 \pi in^{2}\end{aligned}\)