MCQ
Surface area of sphere of diameter $14\ cm$ is:
- ✓$616\ cm^2$
- B$516\ cm^2$
- C$2244\ cm^2$
- D$400\ cm^2$
✓
Answer
Correct option: A.
$616\ cm^2$
Surface area of sphere $=4\pi\text{r}^2$
Given that Diameter $= 14\ cm$
Radius $=\frac{14}{2}=7\text{cm}$
The surface area of sphere $=4\pi\text{r}^2$
$=4\times\frac{22}{7}\times7^2$
$=616\text{cm}^2$
Given that Diameter $= 14\ cm$
Radius $=\frac{14}{2}=7\text{cm}$
The surface area of sphere $=4\pi\text{r}^2$
$=4\times\frac{22}{7}\times7^2$
$=616\text{cm}^2$
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