PERIMETRO REC = ( LX 2) + ( LX 2)
30 = 2X *2 +( X* 2)
30Cm = 4X +2X
30Cm = 6X
30Cm:6=X
5=x
ahora reemplazo
base=2x=2x5=10 cm
altura = x=5
verifico = ( LX 2) + ( LX 2)
10x2 + 5x2 =
20 + 10 = 30 de perimetro
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PERIMETRO REC = ( LX 2) + ( LX 2)
30 = 2X *2 +( X* 2)
30Cm = 4X +2X
30Cm = 6X
30Cm:6=X
5=x
ahora reemplazo
base=2x=2x5=10 cm
altura = x=5
verifico = ( LX 2) + ( LX 2)
10x2 + 5x2 =
20 + 10 = 30 de perimetro