Question

The minute hand of a clock is 21 cm long. the area described by it on the face of clock in 5 minutes is:

Answer 1

Radius of hand of clock =21 cm
theta=Total angle of clock ÷total division
=360÷12
=30°
The area faced=theta/360πr²
=30/360×22/7×7×7
(on similfying) =1/12×22×7
=154/12
=12.8333(approx)

Answer 2

Answer:

Step-by-step explanation:

Radius of hand of clock =21 cm

theta=Total angle of clock ÷total division

=360÷12

=30°

The area faced=theta/360πr²

=30/360×22/7×7×7

(on similfying) =1/12×22×7

=154/12

=12.8333(approx)