The given triangle is an acute angled isosceles triangle.
The third side is either 10 or 16 and the sum of the squares of the two smaller sides must be greater than the square of the third side.
10^{2} + 10^{2} < 16^{2}
Therefore, the third side of the triangle is 16.
Semiperimeter, S = = 21
Area =
=
= 5 units
Correct Answer: 5 units
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