Question

the surface area of a box whose length is 40 centimetre breadth 27cm and height 10cm

Answer 1

surface area of box=l*b*h
=40*27*10
=10800cm^3

Answer 2

Here is your answer mate .

We know that T.S.A of box is =2(lb+bh+hl)

=2(40×27+27×10+10×40)cm^2
=2(1080+270+400)2×1750
=3500cm^2.

HOPE IT HELPS .
MARK AS BRAINLIEST .