Question
D and E are two rectangular tanks. The base area of D is 72 cm2 while that of E is 40 cm2 . At first, D contained water to a height of 48 cm and E was empty, as shown.
  1. What was the volume of the water in D at first? 
  2. Dylan then poured some water from D to E. After that, the height of the water level in D was thrice that in E.  What was the new height of the water level in D? 
3 m
(a)

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(b)

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D and E are two rectangular tanks. The base area of D is 72 cm2 while that of E is 40 cm2 . At first, D contained water to a height of 48 cm and E was empty, as shown.
  1. What was the volume of the water in D at first? 
  2. Dylan then poured some water from D to E. After that, the height of the water level in D was thrice that in E.  What was the new height of the water level in D?