SSC (Marathi Semi-English) 10thMaharashtra State Board
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Find the Area of the Sector Whose Arc Length and Radius Are 8 cm and 3 cm Respectively. - SSC (Marathi Semi-English) 10th - Geometry

ConceptAreas of Sector and Segment of a Circle

Question

Find the area of the sector whose arc length and radius are 8 cm and 3 cm respectively.

Solution

Length of arc, S = 8 cm

Radius of circle, r = 3 cm

S = rθ ⇒ θ = S/r = 8/3 radians

8/3"radians"=180/pixx8/3=(480/pi)@

"Area of the sector "=theta/360xxpir^2=480/(360xxpi)xxpir^2=4/3xx9=12"cm"^2

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APPEARS IN

2014-2015 (March) (with solutions)
Question 2.4 | 2.00 marks
Solution Find the Area of the Sector Whose Arc Length and Radius Are 8 cm and 3 cm Respectively. Concept: Areas of Sector and Segment of a Circle.
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