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R/r values for different triangles like equilateral triangle , isoscales triangle

R/r values for different triangles like equilateral triangle , isoscales triangle 

Grade:12

1 Answers

Vikas TU
14149 Points
2 years ago
Dear student 
In equilateral traingle
a = b =c  
r = del /s 
s = a+b+c /2 
= 3a/2 
r = 2del / 3a 
R = abc / 4del 
del ^2 = 3a^4 /16 
R = 4del /3a 
r/R = 2/4 = 1/2 
Hope this helps 
Good luck  

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