Question

The minute hand of a clock is 21 cm long what is the area swept in 2 hours

Answer 1

hope it helps you!!!!!!!!

Answer 2

Heya Frnd ............ ☺

Length of minute hand = Radius of the circle

Now,

Area covered by minute hand in 1 hr = 360°

So,

$Ar .\: covered \: = > \: \pi \: {r}^{2}$

=> π × 21²

=> 441 π ........... ( 1 )

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Ar. covered in 2 hrs.
=> 2 × 441π

=> 882 × 22/7

=> $\boxed{2768.86}$ cm² .......... ANS