Question

A cuboidal metal box opened at the top has dimension 22m x 14m x 15m. what is the total

surface area of metal sheet required to make 32 such boxes, also find cost of metal @ Rs 120 per sq

m.​

Answer 1

As we know that,

Surface area of cuboid =2(lb+bh+hl)

Therefore,

Surface area of 1 tin box

=2(30×40+40×50+50×30)

=2×(1200+2000+1500)

=9400cm

2

Surface area of 20 tin box =20×9400=188000cm

2

=18.8m

2

Given that the cost of the tin sheet is R.20 per square meter.

Therefore,

Cost of tin required for 20 tin boxes =20×18.8=Rs.376

Answer 2

Step-by-step explanation:

please follow above steps