A 10 cm long rod and 2 cm thick has changed its shape measured
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volume of cly is =22/7R(sq)h
=22/7×2×2×10
=40×22/7
now change shape
vol of cly=22/7×1×1×h
40×22/7=22/7×1×1×h
h=40cm,thick =1cm
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