Question

Challenge U.. :)
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Answer 1

area of triangle = 1/2 x base x hieght
                            = 1/2 x 4(x) x (4x+8)
                            =2x(2x+4)
                            = 4x^2 + 8x
                             

perimeter of square = 4a
                           = 4(3x+2)

given that area of triangle = area of square then
 4(3x+2) = 4(x^2 +2x)
3x+2 = x^2 +2x 
=> x^2 - x - 2 = 0
     x^2 - 2x + x - 2 = 0
     x(x-2) + 1 ( x-2) =0 
 now either x=2 
or x = -1 since here x can't be negative then we take x=2

now perimeter perimeter of square = 4 a
= 4(3(2)  +2)
= 4(6+2)
= 4 (8)
= 32 cm 
hence solved!!
i did it man