A circle with radius 3 has a sector with a central angle of 1/9 pi radians
Mathematics · College · Tue Nov 03 2020
llm
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Given:
Radius, r = 3 m
Central angle of a sector, α = 1/9π radians
Formula:
Area of sector, A = 1/ 2 × α × r²
On substituting the value we get:
Area = 1/ 2 × 1/9 × 3.14 × 3²
= 1/ 2 × 1/9 × 3.14 × 9
= 1.57 m²
Thus, Area or sector is 1.57 m²