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perimetro= 2x10+2h=b
10h=20+2h
8h=20
h=5/2
Comprobamos:
area= 10x5/2= 25
Perimetro=20+2x5/2=20+5=25
5/2
area (A) = b x h = 10h perímetro(p) = 2(b + h )= 20 + 2h
Luego: A = p
⇒ 10h = 20 + 2h
⇒ 10h - 2h = 20
⇒ 8h = 20
⇒ h = 20/8 ⇒ h = 2.5
La altura es de 2.5 cm
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