Find the radius of a sphere whose surface area ... - JAMB Mathematics 2009 Question
Find the radius of a sphere whose surface area is 154 cm2
A
7.00 cm
B
3.50 cm
C
3.00 cm
D
1.75 cm
correct option: b
| 154 = 4 x | 22 | x r2 |
| 7 |
| 154x7 | = r2 |
| 4x22 |
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