In the diagram not drawn to scale, Tank R and Tank S each has a button that, when pressed, will cause the water to flow out if the water level is higher than the hole. Tank R measures 134 cm by 49 cm by 145 cm. Tank S measures 59 cm by 30 cm by 57 cm. Tank T is 70 cm by 25 cm by 23 cm. Both holes are located at a height of 15 cm from the top of their respective containers. When Tank R is completely filled with water and both buttons are pressed, what will be the final water level in Tank T?
Volume of Tank R to pour into Tank S
= 134 x 49 x 15
= 98490 cm³

Volume of the Tank S that can be filled before overflow
= 59 x 30 x (57 - 15)
= 74340 cm³ 

Volume of water in Tank T
= 98490 - 74340
= 24150 cm³ 

Base area of Tank T
= 70 x 25
= 1750 cm² 

Final height of Tank T
= 24150 ÷ 1750
= 13.8 cm

Answer(s): 13.8 cm