Question

1. Aplastic box 1.5 m long
the
har 5 m long, 1.25 m wide and 65 cm deep is to be made his opened
109. Ignoring the thickness of the plastic sheet, determine
The area of the sheet required for making the box.
The cost of sheet for it, if a sheet measuring Im? costs Rs 20.​

Answer 1

We have length = 1.5 m

Breadth = 1.25 m

Height = 0.65 m

i)  Since it is open at the top therefore plastic sheet required for making box

= 2( l + b)  *h + lb

= 2( 1.5 + 1.25 ) * 0.65 + 1.5 * 1.25

= 2 * 2.75 * 0.65+ 1.875

= (3.575 + 1.875 )m2 =  5.45 m2

Answer 2

Answer:

the cost of sheet will be125 rs