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11. Calculate the area of an isosceles triangle

Answer variants:

12

13

75.84

76.84

An isosceles triangle has perimeter 40

$m$ and each of the equal sides is 14

$m$ . Determine the third side and the area of the triangle. (Use

$\sqrt{10} = 3.16$ )

Third side of the triangle

$=$

$m$

Area of the triangle

$=$

$m^2$

[Note: Round off your answer to two decimal places]

$1$

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