Question

19. If a = 13,b= 14,c= 15 then show that R=65/8,r=4r1=21/2,r2=12and r3= 14


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Answer 1

Answer:

Step-by-step explanation:

a=13. b=14 and c=15

s = a+b+c/2 = 13+14+15/2 = 42/2 = 21

delta= √s(s-a)(s-b)(s-c)

=√21×8×7×6

delta= 84

now just substitute the values

R= abc/4delta

r1 = delta/s-a

r2= delta/s-b

r3 = delta/s-c

r = delta/s