Three solid cubes of the side 4cm each are joined to form a cubiod.Then its surface area is
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Step-by-step explanation:
When the cubes are joined the new length becomes 4+4+4cm =12cm
breadth=height=4cm
therefore, apply the formula of surface area of cuboid=2(lb+bh+lh)
=2(48 +16+48)=2(112) =224cm^2
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