Question

A plastic box 1.5 m long, 1.25m wide and 65 cm deep is to be made. It is opened at the
top Ignoring the thickness of the plastic sheet, determine:
The area of the sheet required for making the box.
m) The cost of sheet for it. if a sheet measuring Im' costs 20.​

Answer 1

Answer:

Here is your answer!

Step-by-step explanation:

Answer

Given:

Length of box =1.5 m, Breadth =1.25 m, Height = 0 . 65 m

⇒ Area to be white-washed = Area of cuboid − Area of base.

(i) Area of sheet required =2lb+2bh+2lh−lb

(i) Area of sheet required =2lh+2bh+lb [Box is open]

=[2×1 . 5×0 . 65+2×1 . 25×0 . 65+1 . 5×1 . 25] m

2

=(1 . 95+1 . 625+1 . 875)m

2

=5 . 45 m

2

ii) Cost of sheet per m 2

area = Rs 20

Cost of sheet of 5.45m

2

area = Rs 5 . 45×20

= Rs 109