Elio makes candles that are 14 cm 14 cm14, start text, space, c, m, end text tall. each candle burns 8 88 hours before going out. he is wondering how many hours a 21 cm 21 cm21, start text, space, c, m, end text tall candle can burn for. he assumes that the relationship between the height of a candle and number of hours it burns ( ? ) (h)left parenthesis, h, right parenthesis is proportional. how long can a 21 cm 21 cm21, start text, space, c, m, end text tall candle burn for?