Find the radius of a sphere whose surface area is 154 cm\...
Find the radius of a sphere whose surface area is 154 cm\(^2\)?
7.00 cm
3.50 cm
3.00 cm
1.75 cm
Correct answer is B
| 154 = 4 x | 22 | x r\(^2\) |
| 7 |
| 154x7 |
r\(^2\) |
| 4x22 |
√ 49/4 = r
| 7 | = r |
| 2 |
∴r = 3.50
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