Question

Find the area swept by the hour hand in 1hour radius -6 (b) 8.20 cm (c) 8.863 cm (a) 7.68 cm d) 9.428 cm​

Answer 1

Answer:

area of circle πr^2

Step-by-step explanation:

22/7 *6*6

= 22/7 *36

113.097

that's the answer

options are incorrect

Answer 2

Answer:

Given -

Length of hour hand = radius of circle = 6 cm.

To Find -

Area swept by hour hand in one hour.

Solution -

Area of sector -

Area of sector =

$\frac{theta \: }{360} \times \pi \: r^{2}$

Angle which hour hand swept in an hour

$= \frac{360}{12} = 30 \: degree$

Area of sector -

Area of sector -

$\frac{30}{360} \times \frac{22}{7} \times 6^{2} = 9.42cm^{2}$