Question

1. There are two cuboidal boxes as
shown in the adjoining figure. Which
box requires the lesser amount of
material to make? ​

Answer 1

LSA of a cuboid= 2( l+b)h

= 2(60+40)50

= 2( 100)50

= 200× 50

= 10,000

TSA of a cuboid=2 (lb+bh+ hl)

= 2(60×40+40×50+50×60)

= 2(2400+2000+3000)

= 2(7400)

= 14800

volume of a cuboid = lbh

=60×40×50

=120000