Math, asked by indiraindu, 11 months ago

if a=13 b=14 c=15 show that r=65/8 r=4 ​

Answers

Answered by knjroopa
2

Step-by-step explanation:

Given If a = 13 b = 14 c = 15 show that r = 65/8 r = 4  

  • Now we have a = 13, b = 14 and c = 15
  • So s = a + b + c / 2
  •        = 13 + 14 + 15 / 2
  • Or s = 42 / 2
  • Or s = 21
  • So area will be  
  •         So Δ = √s (s – a) (s – b) (s – c)
  •                 = √21 (21 – 13) (21 – 14) (21 – 15)
  •                 = √21 x 8 x 7 x 6
  •                   = 7 x 3 x 4
  •                   = 84
  • Now R = abc / 4 Δ
  •             = 13 x 14 x 15 / 4 x 84
  •         R =  65 / 8
  •  Now r = Δ / s
  •             = 84 / 21
  •       So r = 4

Reference link will be

https://brainly.in/question/3427626

Answered by shahanaaz90
0

Answer:

R=4

Step-by-step explanation:

and upper one is correct

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