Question

2. A closed box is a cloi inshape
wilt length = Hocam, b=30€ ha som
it o made up of thin metalsheet, find the cool
of metal sheet suquired to make
20 auch boxes my metal sheet costa 45​

Answer 1

Answer:

It is given that

Length of closed box (1)=40cm

Breadth (b)=30cm

And height (h)=50cm

We know that

Total surface area =2×(l×b+b×h+h×l)

Substituting the values

=2×(40×30+30×50+50×40)cm

2

By further calculation

So we get

2×4700=9400cm

2

Surface area of sheet used for 20 such boxes =9400×20=188000cm

2

=18.8m

2

Cost of sheet 1m

2

sheet=Rs45

We get

Total cost =18.8×45=Rs.846

solution