13. A solid rectangular piece of iron measures 1.05 mx 70 cm x 1.5 cm. Find the weight of this
piece in kilograms if 1 cm' of iron weighs 8 grams.
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voln=105×70×1.5
voln=11025cm3
1cm3 weights 8 gm
11025cm3 weight
11025×8
= 88200 gm
Or 88.2 kg
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