beatricedade48
09.11.2020 •
Mathematics
Pls help me with these 3
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Ответ:
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 )