find the area of the shaded triangle if the area of an equilateral triangle ABC is 36
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Step-by-step explanation:
If △ABC is an equilateral triangle of area 36√3cm2, then what is the area of the inscribed circle?
Area of equil triangle of side a is √3 *a^2/4=36√3 by data
Hence a^2=36√3*(4/√3)=144
a=12
perimeter=36
Area of Triangle =r* semiperimeter where r is in radius
r= Area of triangle/ semi perimeter=36√3/18=2√3
Area of incircle=πr^2=12π
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Answer:
Area of triangle ABC is 12
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