Question

The surface area of cuboid-
shaped box having length=80
cm, breadth=40cm and
height=20cm is:
a. 11200 sq.cm
b. 13000 sq.cm
c. 13400 sq.cm
d. 12000 sq.cm​

Answer 1

Step-by-step explanation:

Option a

l= 80cm=length

b= 40cm=breadth

h=20cm=height

therefore total surface area

= 2(lb + bh + hl)

= 2( 80 x 40 + 40 x 20 + 20x 80)

= 2( 3200 +800 + 1600)

=2 x 5600

= 11200 sq. cm

Answer 2

Answer:

surface area of cuboid is= 2(lb+bh+hl)

2(80*40 + 40*20 + 80*20)

2(3200+ 800+ 1600)

2(5600)

therefore, 1200 is the answer