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प्रश्न
If the radius of a circle is 4 cm and the length of an arc is 10 cm, then find the area of the sector.
योग
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उत्तर
r = 4 cm, the length (l) of the arc = 10 cm, A(sector) = ?
The area of the sector = `r/2 xx l`
= `4/2 xx 10`
= 20
The area of the sector is 20 cm2.
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