A rectangular pit 1.4 m long,90cm broad and 70cm deep was dug and 1000 bricks of Base 21cm by 10.5cm were made from the earth dug out.find the height of each bricks.
i आई डोंट अंडरस्टैंड
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Step-by-step explanation:
Volume of rectangular pit =Volume of 1 brick*1000
140×70×90=21×10.5×h×1000
H =140×70×90/21×10.5×1000
=14×7×9/21×10.5
=2×9/3×1.5
=4
The height is 4cm
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