MCQ
The surface area of a sphere of radius 3.5cm is:
- A154cm2
- B164cm2
- C120cm2
- D77cm2
✓
Answer
- 154cm2
Solution:
Given r = 3.5cm
Surface area of sphere $=4\pi\text{r}^2$
$=4\times\frac{22}{7}\times3.5\times3.5$
$=154\text{cm}^2$
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