1.

If two cubes of sides 9 cm each are joined end by end then the surface area of cuboid will

A.  800 \[c{{m}^{2}}\]                
B.  810 \[c{{m}^{2}}\]   
C.  820 \[c{{m}^{2}}\]                
D.  830 \[c{{m}^{2}}\]
Answer» C.  820 \[c{{m}^{2}}\]                


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