A cylindrical candle has diameter 9 cm and height 12 cm. There is a space of 0.5 cm between the candle and the box to allow for packing material. What is the height of the cylindrical box?
Since the height of the candle is 12 cm. If there is a space of 0.5 cm from the candle to the box at both the top end and the bottom end of the candle, the height of the box is 12 cm + 0.5 cm + 0.5 cm = 13 cm.
