A) \[\text{56}.\text{568 c}{{\text{m}}^{\text{2}}}\]
B) \[\text{62 c}{{\text{m}}^{\text{2}}}\]
C) \[\text{70 c}{{\text{m}}^{\text{2}}}\]
D) \[\text{72 c}{{\text{m}}^{\text{2}}}\]
Correct Answer: A
Solution :
| [a] Number of hours from 11 a.m. to 5 p.m. =6 |
| Area swept by hour hand in 1 hour \[=9.428c{{m}^{2}}\] |
| \[\therefore \] Area swept by hour hand in 6 hours |
| \[=9.428\times 6=56.568c{{m}^{2}}\] |
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