1.

A solid iron rectangular block of dimensions 4.4 m, 2.6 m and 1 m is cast into a hollow cylindrical pipe of internal radius 30 cm and thickness 5 cm. Find the length of the pipe.

A.  112.5m                      
B.  112m 
C.  212m             
D.  312m 
Answer» C.  212m             


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