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nahimi
03.08.2019 •
Mathematics
What is the area of triangle lmn? round to the nearest square meter.
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Ответ:
Ответ:
As we know perimeter is the sum of all the sides
so Perimeter=LM+MN+NL
NL=Perimeter-(LM+MN)
NL=16-7-6
NL=3
By Heron's formula
Area=sqrt(s(s-a)(s-b)(s-c)).
where s=perimeter/2
so s=16/2=8
area=sqrt(8(8-7)(8-6)(8-3))
area=8.94427191
after rounding off
area=9
Ответ: