Mathematics
Grade-7
Easy
Question
Determine the area swept by a clock’s second hand in two-minute. If the length of the minute hand is 5.6 cm.
- 393.88
- 196.94
- 241.65
- 302.3
Hint:
1 minute = second hand run full circle one times
2 minutes = second hand run full circle two times
The correct answer is: 393.88
Area = 
= 3.14 × 31.36 = 98.47
second hand will run the full circle 2 times because , it moves 2 minutes
so area is = 2 x area
Area = 2 × 98.47 = 196.94
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