#### #### 2.82
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- V = \frac{1}{3} \pi r^2 h \Rightarrow 100 = \frac{1}{3} \pi r^2 \times 12
- = 4\pi r^2 \Rightarrow r^2 = \frac{100}{4\pi} = \frac{25}{\pi}
- r = \sqrt{\frac{25}{\pi}} = \frac{5}{\sqrt{\pi}} \approx 2.82 \, \text{cm}
- Question 15:
- A sphere is inscribed in a cube with edge length 10 cm. Find the volume of the sphere.
- Solution 15:
