The room ___10 meters across is large enough for a single man to live in.measuring; being measured; 为什么选前者不选后者?房子和测量之间是被动关系吧

measure的主语既可以是人,也可以是物.
主语是人时,意思就是“测量”.
主语是物时,意思是“(物体)大小尺寸是(……)”.
后者的例句是The house is more than twenty metres long and measures six metres in width.“这座房子长20多米,宽6米.”