if the perimeter of isosceles triangle is 11 cm and its unequal side is 5 cm find its area
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Step-by-step explanation:
perimeter of triangle =11cm
unequal side =5cm
equal side =x+x+5=11
=x=3cm
it's semi perimeter=5.5
√5.5(5.5-3)(5.5-3)(5.5-5)
=√5.5×2.5×2.5
√17.1875
√4.15sq.cm
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