Question

41. Find the surface area of a box whose length is 40 cm, breadth 27 cm and height 10 cm​

Answer 1

Surface area=2(lh+bh+lb)

=> Surface area= 2[(40*10)+(27*10)+(40*27)

Surface area= 3500 cm.sq

Answer 2

Answer:

As given

Length = 40 cm

Breadth = 27 cm

Height = 10 cm

Then

The surface area of box

= 2(lb+bh+lh)

=2( 40×27 + 27×10 + 40×10 )

=2( 1080 + 270 + 400 )

=2 × 1750

= 3500 cm ^2