Sector Problems
Geometry
Level
pending
The length of an arc of a circle of radius 5cm is 4cm. Find the area of the sector.
The answer is 10.
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1 solution
The key to solving this problem is getting the value of the angle. The first step is to use the length of arc formula which is Φ/360 *2πr. After getting the angle value of 46 degrees, you can then use the area of sector formula which is equals Φ/360 *πr^2. You will get an approximate value of 10 cm^2.