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CBSE Class 9 Answered

A cube of copper edge 11cm is melted and formed into a cylindrical wire of diameter 0.5cm. what length of wire will be obtained from the cube

Asked by agentdevil1818 | 03 Mar, 2020, 05:27: PM
Expert Answer
Side of the cube = 11 cm
Volume of the cube = 113 
Radius of the cylinder = 0.5/2=0.25 and h be the height of the cylinder
Volume of cube = Volume of cylindrical wire
11 cubed equals 22 over 7 cross times 0.25 cross times 0.25 cross times h
rightwards double arrow h equals fraction numerator 11 cubed cross times 7 over denominator 0.25 cross times 0.25 cross times 22 end fraction equals 6776
H e n c e comma space t h e space h e i g h t space o f space t h e space c y l i n d e r space i s space 6776 space c m.
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