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a metallic cube of edge 1cm is drawn into a wire of diameter 4mm , then find the length of wire

Posted by Sheryn William 5 years, 3 months ago

CBSE > Class 10 > Mathematics

1 answers

Yogita Ingle 5 years, 3 months ago

side of cube (a)= 1 cm

volume of cube = a³ = 1 cm³ = 1000 mm³

volume of material remains same

So,

volume of cube = volume of wire

volume of wire = π r² × h

1000 mm³ = π × (4/2)² × h

h = 1000/[ π × 4]

h = 250/π mm = 25/π cm

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