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ICSE Class 9 Answered

Three cubes,whose edges are x cm,8 cm and 10 cm respectively, are melted and recasted into a single cube of edge 12 cm. Find 'x'.
Asked by Govind | 24 Oct, 2018, 06:21: AM
answered-by-expert Expert Answer
 
Volume of a single cube = (side)3  = (12)3 = 1728 cm3      
Volumes of three cube = (x)3 + (8)3  + (10)3 
 
According to the condition in the question, we get
(x)3 + (8)3  + (10)3  = 1728
 
After solving, we get
 x= 6 cm
Answered by Yasmeen Khan | 24 Oct, 2018, 12:33: PM
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