Q : 1 A plastic box long, wide and deep is to be made. It is opened at the top. Ignoring the thickness of the plastic sheet, determine:
(ii) The cost of sheet for it, if a sheet measuring costs Rs 20.
Given, dimensions of the plastic box
We know, area of the sheet required for making the box is
(ii) Cost for of sheet = Rs 20
Cost for of sheet =
Required cost of the sheet is