Four cubic blocks with edge 4cm were kept two on top of two to form a block as shown area of the block and the coast of painting it at rupees 32 per cm2
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New dimensions :
l=4+4=8cm,b=4cm,h=4+4=8cm
Total surface area = 2(lb+bh+h1)=2(8×4+4×8+8×8)
= 256 cm
2
Cost of painting = Rs.(32×256)=Rs.8192
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