(Q4) The length of the minute hand of a clock is 14 cm. Find the area swept by the minute hand in 10 minutes.

Angle made by minute hand in 1 m =
360°
 = °

Angle made by minute hand in 10m = 10× = °

The area swept by minute hand is in the shape of a sector with radius r = 14cm and angle x = °

A =
x
360
 ×πr2
=
360
 ×
22
7
 ××
=
1
 × = .66 cm 2

Area swept by the minute hand in 10 minutes = .66cm2