Q: The sides of a triangle are 15 cm, 20 cm and 25 cm respectively, then the radius of in-circle is एक त्रिभुज की भुजाएँ क्रमश: 15 सेमी., 20 सेमी. तथा 25 सेमी. हैं, तो अन्त:वृत्त की त्रिज्या है।
A.
10 cm/10 सेमी.
B.
12.5 cm/12.5 सेमी.
C.
5 cm/5 सेमी.
D.
7.5 cm/7.5 सेमी.
Correct Answer:
Option C -
Explanations:
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