an isosceles triangle has perimeter 30 cm and each of the equal sides is 12 cm. find the area of the triangle.
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- First,let the third side be x.
It is given that the length of the equal sides us 12 cm and it's perimeter is 30 cm.
- So,
So,the length of the third side is 6 cm.
Thus,the semi perimeter of the isosceles triangle (s) = 30/2 cm =15 cm
- By using Heron's Formula,
Area of the triangle,
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