Question

the length of minute hand of a clock is 14cm.if minute hands moves from 1 to 10 on the dial,then _ cm^ area will be covered.​

Answer 1

Answer: 462 cm square

Step-by-step explanation:

In 1 hour it will cover 360 degrees complete angle

Then in 60 min also it will cover 360 degrees as 1 hour equals 60 min

In 1 min it covers 360/60 degrees

I.e. 6 degrees

If minute hand moves from 1 to 10

It covers 45 minutes

Then in 45 minutes it will cover

45×6 degrees=270 degrees

Then applying the formula of area of sector as it will make a sector only while going from 1 to 10

Area of sector= theta/360×22/7×r×r

=270/360×22/7×14×14

=462 cm square

Hope it helps u