Can the values be added or subtracted? if one value needs to be converted to another, describe the conversion. 19.75 cm + 26.2 l a. the values cannot be added because one is measuring length and the other is measuring capacity. b. the values can be added without making a conversion of units because they both measure length. c. the values can be added after making a conversion of units because they both measure length. d. the values cannot be added because one is measuring length and the other is measuring area.