if a=13 b=14 c=15 show that r=65/8 r=4
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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
0
Answer:
R=4
Step-by-step explanation:
and upper one is correct
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