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hipotenusa: x+10
cateto menor: 50
Por pitagoras.
(x+10)^2 = x^2 + 50^2
x^2 + 20x + 100= x^2 + 2500
20x= 2400
x= 120
A= bh/2
A= 120*50/2
A= 3000 cm^2