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a*b = 60
(4+b)*b = 60
b²+4b-60 = 0
b = {-4+-√(4²-4(1*-60))} / 2*1
b = {-4+-√(16+240)} / 2
b = {-4+-√256} / 2
b = {-4+-16} / 2
b ₁ = {-4+16}/2 = 12/2 = 6
a = 4+b = 10
Respuesta:
altura = 10 metros
base = 6 metros