The perimeter of an isosceles triangle is 42cm and the base is 1 ½ times each of equal sides find the length of each side and the area of triangle
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the length of each side of the triangle
1 ½x+x+x=42
3/2x+x+x=42
7/2x=42
x=12cm
side=12cm
the height of the triangle
base^2+height ^2+hypotenuse^2
height ^2=12²-9²=63
height= √63=3√7
Area of the triangle
1/2 base ×height
1/2×18×3√7
71.28sq units
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