Question

The minute hand of a clock is √21cm long .find the area described by the minute hand on the face of the clock between 7:00 am and 7:05 am.

Answer 1

⭕️Let the radius of the sector be r cm.


⭕️Length of minute hand of the clock =r=√21cm


⭕️Angle subtended by the minute hand in 60 minutes = 360°


⭕️Angle subtended by the minute in 1 minute =360°/60=6°


⭕️Angle subtended by the minute in 5 minutes = 6° × 5 = 30°


⭕️Area described by the minute hand between 7 : 00 AM and 7 : 05 AM


Now refer attachment for all the calculations ;) ...

$\huge\bf{\boxed {\red{\mathfrak{thank \: you :)}}}}$

Answer 2

Answer:

hope it helps

Step-by-step explanation:

Let the radius of the sector be r cm.

⭕️Length of minute hand of the clock =r=√21cm

⭕️Angle subtended by the minute hand in 60 minutes = 360°

⭕️Angle subtended by the minute in 1 minute =360°/60=6°

⭕️Angle subtended by the minute in 5 minutes = 6° × 5 = 30°

⭕️Area described by the minute hand between 7 : 00 AM and 7 : 05 AM