MCQ
The volume of a sphere of radius 2r is:
- A$\frac{32\pi\text{r}^3}{3}$
- B$\frac{16\pi\text{r}^3}{3}$
- C$\frac{8\pi\text{r}^3}{3}$
- D$\frac{64\pi\text{r}^3}{3}$
✓
Answer
- $\frac{32\pi\text{r}^3}{3}$
Solution:
Volume of sphere $=\frac{4}{3}\pi\text{r}^3$
$=\frac{4}{3}\pi\times(2\text{r})^3$
$=\frac{4}{3}\pi\times8\text{r}^3$
$=\frac{32\pi\text{r}^3}{3}$
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