Question

find the area swept by the hour hand in 3hours. if the length of hour hand is 2.1 cm​

Answer 1

Answer:

41.54 sq.cm

Step-by-step explanation:

length of hand indicates radius of circle.

we know the formula for area of square.

= π r (square)

=3.14 * 2.1 *2.1

=13.84

it means for 1 hr it swept 13.84 sq.cm area

so for 3 hrs

13.84 *3= 41.54 sq. cm