a cuboid of dimension is 50cm×40cm×4cm is melted to form a cube. Find its edge and hence the surface area.
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volume of cuboid = 50x40x4= 8000 cube cm
volume of cube = volume of cuboid (melted from same solid)
i.e. side ^ 3 = 8000
side = 20
surface area of cube = 6 side^2 = 6 x 20 x 20
=2400 sq cm
volume of cube = volume of cuboid (melted from same solid)
i.e. side ^ 3 = 8000
side = 20
surface area of cube = 6 side^2 = 6 x 20 x 20
=2400 sq cm
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