AP EAMCET · Maths · Properties of Triangles
In a \(\triangle A B C\), if \(r_1=12, r_2=18\) and \(r_3=36\), then \(b=\)
- A \(12\)
- B \(6\)
- C \(24\)
- D \(18\)
Answer & Solution
Correct Answer
(C) \(24\)
Step-by-step Solution
Detailed explanation
Given, in \(\triangle A B C, r_1=12, r_2=18, r_3=36\) \(\because \quad \frac{1}{r}=\frac{1}{r_1}+\frac{1}{r_2}+\frac{1}{r_3}\) \(=\frac{1}{12}+\frac{1}{18}+\frac{1}{36}=\frac{3+2+1}{36}\)…
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