Question

what is the formula of TSA of cuboid when it is open at the top​

Answer 1

Answer:

SA=2lw +2lh +2hw formula for area

Answer 2

Answer:

FORMULA WILL BE 2(lb+bh+hl)-lb OR 2h(l+b)+lb

Step-by-step explanation:

FIRST FORMULA=TSA OF CUBOID-AREA OF TOP

                           = 2(lb+bh+hl)-lb

SECOND FORMULA=CSA OF CUBOID+AREA OF BOTTOM

                                 =2h(l+b)+lb

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