find the length of the longest pole that can be placed in a room 12m long , 8m broad and 9m high
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vol. of cuboid = l b h = 12*8*9=864 m cube
tsa = 2(lb+bh+hl)= 2(12*8+8*9+9*12)=552 m square
csa = 2h (l+b)= 2*9(12+8)=360
tsa = 2(lb+bh+hl)= 2(12*8+8*9+9*12)=552 m square
csa = 2h (l+b)= 2*9(12+8)=360
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