Q. 23.7( 3 Votes )
A cuboid is 12 cm A. 
B. 
C. 
D. 
Answer :
Given: Length = 12 cm
Breadth = 9 cm
Height = 8 cm
Total surface area of a cuboid = 2[(Length ×Breadth) + (Breadth ×Height) + (Height ×Length)]
Total surface area = 2[(12×9) + (9×8) + (8×12)] cm2 = 2(108+72+96) cm2
= 2(276) cm2 = 552 cm2
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