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Saturday, May 14, 2022

2022/038) The sides of a right angled triangle are in arithmetic progression. If the triangle has area 24, find the length of smallest sides

Let the sides be a -b , a , a+b

as the tringle is right angled so (a-b)^2 + a^2 = (a+b)^2

or a^2-2ab + b^2 + a ^2 = a^2 + 2ab + b^2

or   a^2= 4ab

or a= 4b

as the triangls is right angled so aea = \frac{1}{2} a(a-b) =  \frac{1}{2} 4b(4b-b) = 6b^2 = 24 or b= 2

the smallest sde = 3b = 6. 

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