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  1. The length of minute hand of a wall clock is 7 cms. The area swept by minute hand in 30 minutes is ?
    1. 147 sq. cm
    2. 210 sq. cm
    3. 154 sq. cm
    4. 77 sq. cm
Correct Option: D

Angle swept in 30 min= 180°
Area swept = [(22/7) x 7 x 7] x [180°/360°] cm2
= 77 cm2


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