A plastic box 1 5m long,1 25 m wide and 65 cm deep is to be made It - Maths - Surface Areas and Volumes

Question

A plastic box 1 5m long,1 25 m wide and 65 cm deep is to be made It
is opened at the top Ignoring the thickness of the plastic sheet,
determine:

(i) The area of the sheet required for making the box
(ii) The cost of sheet for it, if a sheet measuring 1m square costs
Rs 20

Varun.Rawat · Accepted Answer

Length of the box, l = 1
5 mBreadth of the box, b = 1
25 mheight of the box, h = 65 cm = 0
65 mArea of sheet needed for box = 2l+bh + lb=21
5 + 1 25×0 65 + 1 5 × 1
25=2×2 75×0 65+1 875=3 575+1 875=5
45 m2Cost of 1 m2 of sheet = Rs 20cost of 5
45 m2 of sheet = Rs 20 × 5
45 = Rs 109

A plastic box 1.5m long,1.25 m wide and 65 cm deep is to be made . It is opened at the top. Ignoring the thickness of the plastic sheet, determine: (i) The area of the sheet required for making the box. (ii) The cost of sheet for it, if a sheet measuring 1m square costs Rs.20

A plastic box 1.5m long,1.25 m wide and 65 cm deep is to be made . It is opened at the top. Ignoring the thickness of the plastic sheet, determine:

(i) The area of the sheet required for making the box.
(ii) The cost of sheet for it, if a sheet measuring 1m square costs Rs.20