Let the sides be a, a-d and a + d
we have (a-d)^2 + a^2 = (a-d)^2
or a^2-2ad + d^2 + a^2 = a^2 + 2ad + d^2
or a^2 -4ad=0
or a(a-4d)=0
so a=4d
area of the \triangle is \frac{a(a-d)}{2} = 24
or \frac{4d * 3d}{2} = 24
or d= 2 and hence sides are 6,8, 12
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