6. Find the total volume of 15 cubes whose edges are 16 cm, 17 cm, 18 cm, g, 30 cm
respectively.
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125523 centimetre cube
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solution :
let a , b ,c ,d are the edges of cubes ,
Given a = 16 cm , b = 17 cm , c = 18 cm , d = 30 cm
Total volume of 15 cubes = 15 [ a³+b³+c³+d³ ]
= 15 [ 16³ + 17³ + 18³ + 30³ ]
= 15 [ 4096 + 4913 + 5832 + 27000 ]
= 15 × 41841
= 627615 cm³
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