Question

# Two equal sides of an isosceles triangle are $$3x- 1$$ and $$2x +2$$ units. The third side is $$2x$$ units find x and the perimeter of the triangle.

Solution

## In isosceles triangle two sides are equal,So,3x-1=2x+2x=3Perimeter=sum of all sides=3x-1+2x+2+2x=7x+1Substituting value of xPerimeter=7(3)+1=21+1=22Thus x=3 and Perimeter of a triangle=22 square units'Mathematics

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