In the diagram not drawn to scale, Container J and Container K each has a button that, when pressed, will cause the water to flow out if the water level is higher than the hole. Container J measures 130 cm by 42 cm by 138 cm. Container K measures 51 cm by 27 cm by 58 cm. Container L is 60 cm by 30 cm by 20 cm. Both holes are located at a height of 12 cm from the top of their respective containers. When Container J is completely filled with water and both buttons are pressed, what will be the final water level in Container L?
Volume of Container J to pour into Container K
= 130 x 42 x 12
= 65520 cm³

Volume of the Container K that can be filled before overflow
= 51 x 27 x (58 - 12)
= 63342 cm³ 

Volume of water in Container L
= 65520 - 63342
= 2178 cm³ 

Base area of Container L
= 60 x 30
= 1800 cm² 

Final height of Container L
= 2178 ÷ 1800
= 1.21 cm

Answer(s): 1.21 cm