the base of an isosceles triangle is 10 cm and one of its equal side is 13 cm find its area by using heron's formula
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Answer:
a=10cm
b=c=13cm
s=a+b+c/2=10+13+13/2=36/2=18cm
area of triangle =√(s(s-a)(s-b)(s-c))=√(18(18-10)(18-13)(18-13))
=√18×8×5×5
=60cm²
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