Homework Answers
a)
- Fencing is needed for the arc part only
- We have to find the arc length of the circular sector
- Radius 'r' = 220 ft
- Total circle has 360 degree of angle around the origin,
One-eight of circle consist of 45 degree of angle around the
origin.i,e.
radian.
radian.
Fencing needed to be done on 172.78 ft
b)
Radius 'r' = 17 in
Inside angle = 105 degree =1.8326 rad (105 x
/180)
Area of circular sector =
Area of circular sector is 264.81 sqr inch
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