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How to do the last question on page 16 of the second volume of grade five?
1 l = 1 cubic decimeter = 1000 cubic centimeter

Water tank volume =50*30* 10= 15000 cubic centimeters.

15000-1000 =14000 cubic centimeters

14000 divided by 50 divided by 30 = 280 cm in 3.

Answer: The water surface is 280 cm away from the water tank mouth.

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