an isosceles tringle has perimeter 30cm and each of the equal sides is 12 cm .find the area of the triangle.
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Answered by
3
Answer:
The base is 8 cm.
Using herons formula, S = 16.
Area = √ [ 16 • 4 • 4 • 8 ] = 64√2 cm sq.
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Answered by
20
First,let the third side be x.
It is given that the length of the equal sides is 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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