a cubic is formed by joining two identical cubes of value 64cmcube find the total surface area of the cubied
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very difficult question answer this
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side of cube = a^3
64=a^3
a=4cm
l of cuboid = 4+4= 8cm
b of cuboid = 4cm
h of cuboid = 4cm
T.S.A. of cuboid so formed = 2(lb+bh+hl)
= 2(8*4+4*4+4*8)
= 2(32+16+32)
= 2×80
= 160cm^2 Ans.
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