Find the area of a triangle whose sides are 12 cm, 6 cm and 15 cm.
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Answer:
a=12cm b=6cm c=15cm
semi perimeter =s=a+b+c/2 =12+6+15/2=33/2=16.5cm
area of triangle =√s(s-a)(s-b)(s-c)
=√16.5(16.5-12)(16.5-6)(16.5-15)
=√16.5×4.5×10.5×1.5
=287.89cm²
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