alex3482 alex3482

03-08-2018
Mathematics

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Calculate the area of triangle ABC if a = 7.9, b = 6.3 , and c= 8.5

Calculate the area of triangle ABC if a 79 b 63 and c 85 class=

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Nyctalus Nyctalus

03-08-2018

WE start with finding s= a+b+ c)/2 = ( 7.9 + 6.3+ 8.5) /2

= 11.35

Area of triangle = sqrt (11.35 * ( 11.35 - 7.9)( 11.35 - 6.3) ( 11.35 -8.5 ) )

sqrt ( 11.35 * 3.45 * 5.05 * 2.85)

sqrt (563.57)

23.739

Answer is 23.74 ( when round off )

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