Perimeter and diagonal

The perimeter of the rectangle is 82 m, the length of its diagonal is 29 m. Find the dimensions of the rectangle.

Correct result:

a =  21 m
b =  20 m


o=82 m u=29 m  u2=a2+b2 o=2(a+b)  u2=a2+(o/2a)2  292=212+(82/221)2 a=a1=21=21 m

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b=a2=20=20 m

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