Question
B and C are two rectangular containers. The base area of B is 86 cm2 while that of C is 42 cm2 . At first, B contained water to a height of 30 cm and C was empty, as shown.
  1. What was the volume of the water in B at first? 
  2. Bobby then poured some water from B to C. After that, the height of the water level in B was thrice that in C.  What was the new height of the water level in B? 
3 m
(a)

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(b)

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B and C are two rectangular containers. The base area of B is 86 cm2 while that of C is 42 cm2 . At first, B contained water to a height of 30 cm and C was empty, as shown.
  1. What was the volume of the water in B at first? 
  2. Bobby then poured some water from B to C. After that, the height of the water level in B was thrice that in C.  What was the new height of the water level in B?