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The minute hand of clock is √21 cm long. The area described by a minute hand on the face of the clock between 7 am and 7.05 am is
  • a)
    22 cm2
  • b)
    5.5 cm2
  • c)
    11 cm2
  • d)
    none of the above
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The minute hand of clock is √21 cm long. The area described by a...
Given that length of minute hand of clock is √21 cm
Angle described by the minute hand in 60 minutes = 360o
Angle described by the minute hand in 5 minutes = 360/60 x 5 = 30o

We know that Area of sector = θ/360 x πr2
= 30/360 x 22/7 x √21 x √21
= 11/2 = 5.5 cm2
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Most Upvoted Answer
The minute hand of clock is √21 cm long. The area described by a...
The minute hand of a clock is the longer hand that moves around the clock face, indicating the minutes that have passed in an hour. It takes 60 minutes for the minute hand to complete one full revolution around the clock.
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The minute hand of clock is √21 cm long. The area described by a minute hand on the face of the clock between 7 am and 7.05 am isa)22 cm2b)5.5 cm2c)11 cm2d)none of the aboveCorrect answer is option 'B'. Can you explain this answer?
Question Description
The minute hand of clock is √21 cm long. The area described by a minute hand on the face of the clock between 7 am and 7.05 am isa)22 cm2b)5.5 cm2c)11 cm2d)none of the aboveCorrect answer is option 'B'. Can you explain this answer? for Railways 2024 is part of Railways preparation. The Question and answers have been prepared according to the Railways exam syllabus. Information about The minute hand of clock is √21 cm long. The area described by a minute hand on the face of the clock between 7 am and 7.05 am isa)22 cm2b)5.5 cm2c)11 cm2d)none of the aboveCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Railways 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The minute hand of clock is √21 cm long. The area described by a minute hand on the face of the clock between 7 am and 7.05 am isa)22 cm2b)5.5 cm2c)11 cm2d)none of the aboveCorrect answer is option 'B'. Can you explain this answer?.
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