Tank P, measuring 70 cm by 25 cm by 46 cm, was filled with water to the brim. Water was then poured from Tank P to Tank Q, which has a base area of 413 cm² until the height of the water level in Tank Q became twice that of the water level in Tank P. Find the volume of water in Tank Q, leaving your answer in cubic cm.
Volume of Tank P
= 70 x 25 x 46
= 80500 cm³ 

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

Total base areas
= 1750 + 413 + 413
= 2576 cm² 

Height of the water level in Tank P after pouring
= 80500 ÷ 2576
= 31.25 cm

Height of the water level in Tank Q after pouring
= 2 x 31.25 
= 62.5 cm

Volume of water in Tank Q
= 413 x 62.5
= 25812.5 cm³ 

Answer(s): 25812.5 cm³