1.

If the perimeter of isosceles triangle is 11 cm and its unequal side is 5 cm find its area​

Answer»

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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