Question 279645
x^2+(x+2)^2=(x+4)^2

x^2 +x^2+4x+4= x^2+8x+16

x^2-4x-12=0

x^2-6x+2x-12=0

x(x-6)+2(x-6)=0

(x-6)(x+2)=0

So x=6

the sides are 6 8 10

length of strip = 24