Multiple choice

Find the number of right angles subtended by the hour hand of a clock when it goes from 4 to 7.

  1. 1

  2. 2

  3. 3

  4. 4

  5. a
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A Correct answer
Explanation

The hour hand moves 360 degrees in 12 hours, meaning 30 degrees per hour. Moving from 4 to 7 takes 3 hours, covering 90 degrees. A 90 degree angle is one right angle.

AI explanation

The hour hand moves 360 degrees in 12 hours, so it covers 30 degrees per hour. Going from 4 to 7 takes 3 hours, meaning the hour hand moves 3 multiplied by 30 degrees, which equals 90 degrees. Since a right angle measures exactly 90 degrees, the result is 1 right angle.

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