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CBSE Class 9 Answered

PLEASE SOLVE
Asked by VEDIKA.L | 23 Feb, 2010, 08:44: PM
answered-by-expert Expert Answer

PLEASE WRITE THE EQUATION WITH PROPER BRACKETS, (1/V) = (2/S)[(1/a) + (1/b) + (1/c)]

V = abc

S = 2ab + 2bc + 2ac            .........there will 2 faces with area ab and so on.

RHS = (2/S)(1/a + 1/b + 1/c)

= (2/(2(ab + bc + ac)) ((ab + bc + ac)/(abc))

= 1/(abc)

= 1/V = LHS

Regards,

Team,

TopperLearning.

Answered by | 24 Feb, 2010, 06:07: AM
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