The external length,width and height of an open rectangular container are 41cm,21cm and 15.5cm respectively. The thickness of the material making the container is 5mm.If the container has 8litres of water,calculate the internal height above the water level. Ans:5cm


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Question Number 66985 by Mr Jor last updated on 21/Aug/19

$The external length, width and height$ $of an open rectangular container are$ $41 cm, 21 cm and 15 . 5 cm respectively .$ $The thickness of the material making$ $the container is 5 mm . If the container$ $has 8 litres of water, calculate the$ $internal height above the water level .$ $A n s : 5 c m$
	Answered by mr W last updated on 22/Aug/19

	$i n t e r n a l l e n g t h = e x t e r n a l - 2 \times t h i c k n e s s$ $L_{i} = 41 - 2 \times 0.5 = 40 c m$ $W_{i} = 21 - 2 \times 0.5 = 20 c m$ $i n t e r n a l h e i g h t = e x t e r n a l - t h i c k n e s s$ $H_{i} = 15.5 - 0.5 = 15 c m$ $d e p t h o f w a t e r = \frac{8000}{40 \times 20} = 10 c m$ $h e i g h t a b o v e w a t e r l e v e l = 15 - 10 = 5 c m$
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