Respuesta :
if it starts at 30.45 cm and you are breaking off 10.21 cm then you will be subtracting
30.45 - 10.21 = 20.24
the wood is now 20.24 cm long
if it starts at 30.45 cm and you are breaking off 10.21 cm then you will be subtracting
30.45 - 10.21 = 20.24
the wood is now 20.24 cm long