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TIMO 2017 Grade 6 Heat Set 5 Question 19

TIMO · TIMO 2017 Grade 6 Heat Set 5

Question 19

The attached figure below shows a cubic container whose side length of the inner base is
20cm, and is filled with water with depth 16cm. A cuboid iron bar with a square base is
inserted into the container until the base of the cuboid touches the base of the container.
If the water level rose 9cm, find the side length of the square base of the iron bar in cm.

Question illustration