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NCERT Solutions Class 10 Mathematics Solutions for Areas Related to Circles - Exercise 12.2 in Chapter 12 - Areas Related to Circles

Question 7 Areas Related to Circles - Exercise 12.2

Area of a sector of angle p (in degrees) of a circle with radius R is

Answer:

\text{The area of a sector}= (\frac{θ}{360°})×πr^2\\ \text{Given,}\ θ = p\\ \text{So, area of sector} = \frac{p}{360°}×πR^2\\ \text{Multiplying and dividing by 2 simultaneously,}\\ = (\frac{p}{360°})×\frac22×πR^2\\ = (\frac{2p}{720°})×2πR^2

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