Find the semi- perimeter of the triangle whose sides are 21 cm,20 cm,and 29?
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21
semi perimeter=21+20+29=70/2=35cm
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perimeter=(21+20+29) cm
=70 cm
therefore :
semi perimeter = 70/2
= 35 cm.
=70 cm
therefore :
semi perimeter = 70/2
= 35 cm.
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