Question

The length of the hour hand of a clock is 14 cm find the area swept by high hand in 30 minutes

Answer 1

Clock= circle,

14cm = diameter,

radius = 14/2 =7,

area swept in 30 min = half the are of circle.

$area \: of \: circle = \pi \: r \: {}^{2}$

= 22/7 X 7 X 7

= 22 X 7

= 154 cm

$154 \: cm {}^{2}$