Question

box open at top has length 80 cm , breadth 40 cm and height 20 cm then total surface area of box is *

4800 〖cm〗^2

11200 〖cm〗^2

8000 〖cm〗^2

None of these

​

Answer 1

$\huge\fbox\fcolorbox{green}{pink}{Answer}$

4800cm²

$\fbox\fcolorbox{yellow}{pink}{Explanation}$

l=80cm,b=40cm,h=20cm

Therefore,TSA=2(lb+bh+hl)=280×40+40×20+80×20)=11200 cm²

LSA = 2(l+b)h=2(80+40)20=4800 cm²

Answer 2

⬆️....Here's ur answer....⬆️