Question

the surface area of cubid shaped box having length 80 centimetre, breadth of 40 centimetre height 20 centimetres. (1) 11200 (2) 13000 (3) 13400 (4) 12000​

Answer 1

Answer:

TSA of a cuboid = 2(lb+bh+lh)

= 2(80×40+40×20+80×20)

= 2( 3200+800+1600)

= 2×5600

=11,200

hence your answer is option 1