Question

If hour hand of a circular clock is 7cm long then find the area swept by it in 36 minutes.

Answer 1

Step-by-step explanation:

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Answer 2

The area swept is 92.316 cm².

Step-by-step explanation:

Given : If hour hand of a circular clock is 7 cm long.

To find : The area swept by it in 36 minutes ?

Solution :

The area of the region traced by minute hand in 60 minute is given by,

$A=\pi r^2$

The region traced in 36 minute is

$A=\frac{\pi r^2}{60}\times 36$

The radius is r=7 cm.

$A=\frac{3.14\times 7\times 7}{60}\times 36$

$A=92.316$

Therefore, the area swept is 92.316 cm².

#Learn more

The length of a minute hand of a wall clock is 7cm , find the area swept by it in half an hour.

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