The hour hand of clock is 6 CM long find the area of the sector formed by this hand in 90 minutes
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Answer:
Radius =6cm
In 60 minutes hour hand makes one complete rotation.
In 1 minute 1/60 rotation
In 90 minutes 1/60*90= 3/2 =1.5 rotation.
Area of circle = πr^2
= 22/7*36
= 113.14 sq cm
Area of the sector so formed = 1.5*113.14 =169.71 sq cm
Step-by-step explanation:
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