27. A circle is inscribed in a tria...
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27. A circle is inscribed in a triangle whose sides arc 8 cm, 15 cm and 17 cm, then the radius of the circle is (a) 3 cm (b) 4cm (c) 5 cm (d) none of these

JEE/Engineering Exams
Maths
Solution
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( begin{aligned} S &=frac{a+b-c}{82} &=frac{15+8 cdots 17}{2} &=frac{23-17}{2} &=frac{6}{1}=3 end{aligned} )
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