mayankdevnani
  • mayankdevnani
A metal cube of edge 12 cm is melted and formed into three smaller cubes. If the edges of two smaller cubes are 6 cm and 8 cm . Find the edge of the third smaller cube.(Assume that there is no loss of metal during melting).
Mathematics
katieb
  • katieb
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shamim
  • shamim
12*12*12=6*6*6+8*8*8+l*l*l
mayankdevnani
  • mayankdevnani
what???plz explain me
shamim
  • shamim
u hv to solve this equation

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shamim
  • shamim
ok
shamim
  • shamim
the volume of larger cube is equal to the total volume of those small three cube
anonymous
  • anonymous
\[V_{initial}=V_{final}\] \
shamim
  • shamim
ya u r righr
mayankdevnani
  • mayankdevnani
ok
shamim
  • shamim
do u wnt to get the solution of my equation
mayankdevnani
  • mayankdevnani
12*12*12=6*6*6+8*8*8+l*l*l |dw:1353831812338:dw|
shamim
  • shamim
no
mayankdevnani
  • mayankdevnani
req. eq 8*8*8+l*l*l=2*2*2
shamim
  • shamim
now i m going to explaining it
mayankdevnani
  • mayankdevnani
ok plz @shamim
shamim
  • shamim
now i m going to explaining it\[12\times12\times12=6\times6\times6+8\times8\times8+l ^{3}\]
shamim
  • shamim
\[or, 1728=216+512+l ^{3}\]
shamim
  • shamim
\[or, l ^{3}=1728-216-512\]
shamim
  • shamim
\[or, l ^{3}=1000\]
mayankdevnani
  • mayankdevnani
\[l^3=1000\] \[l=10cm\]
shamim
  • shamim
\[or, l=10\]
mayankdevnani
  • mayankdevnani
right @shamim
shamim
  • shamim
ya u r right
mayankdevnani
  • mayankdevnani
thnxx....
shamim
  • shamim
welcome

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