Question

The hour hand of a clock is 6 cm long. The area swept by it between 11.20 am and 11.55 am is

Options

• 2.75 cm²

• 5.5 cm² 

• 11 cm²

• 10 cm²

Answer 1

Hour hand moves ` (1/2°)` in one minute.

So, area, 

`=1/2(r^2)(θ/180 pi)`

`=1/2(36)(35/2(180)pi)`

`=5.5 cm^2`