Question
E and F are two rectangular tanks. The base area of E is 72 cm2 while that of F is 42 cm2 . At first, E contained water to a height of 31 cm and F was empty, as shown.
  1. What was the volume of the water in E at first? 
  2. Warren then poured some water from E to F. After that, the height of the water level in E was twice that in F.  What was the new height of the water level in E? 
3 m
(a)

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(b)

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E and F are two rectangular tanks. The base area of E is 72 cm2 while that of F is 42 cm2 . At first, E contained water to a height of 31 cm and F was empty, as shown.
  1. What was the volume of the water in E at first? 
  2. Warren then poured some water from E to F. After that, the height of the water level in E was twice that in F.  What was the new height of the water level in E?