Question

the minute hand of a clock is 10cm long find the area of the face of the clock described by the minute hand during the period of 45 minutes​

Answer 1

Answer:

75 π. cmsq.

Step-by-step explanation:

Here, let's r = 10

Now area of clock = πr 2

= 2200/7

Now area covers in the 45 minutes are 3 quadrants (90°)

Hence, Area covered = (270°/360°) × 2200/7

= 75π