A) 6 sq cm
B) 7 sq cm
C) 8 sq cm
D) 9 sq cm
Correct Answer: C
Solution :
Initially, \[l=1,\,b=1,\,h=1\] When the cube is cut into two halves, then for each half, \[l=\frac{1}{2},\,b=1,h=1\] \[\therefore \] Total surface area of both the halves \[=2(lb+bh+hl)+2(lb+bh+hl)\] \[=4\left( \frac{1}{2}\times 1+1\times 1+1\times \frac{1}{2} \right)=4\left( \frac{1}{2}+1+\frac{1}{2} \right)\]\[=8\,sq.unit\]You need to login to perform this action.
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