Question

EXERCISE 13.1
1. A plastic box 1.5 m 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:
(1) The area of the sheet required for making the box.
(ii) The cost of sheet for it, if a sheet measuring im? costs 20.
5 m. 4 m and 3 m respectively. Find the​

Answer 1

Answer:

please tell the shape of figure

Answer 2

Answer:

length 1.5m breadth 1.25 m height 65 = 65/100 = 0.65

formula is = 2lh + 2bh+ 2lb

{ 2/ 1.5/ 1.25 +2/1.25/0.65+ 1.5/1.25}

{1.95 + 1.625+ 1.875 } m = 5.45m

cost cost of the permitted square is rupees 20

cost cost of the 5.45m square= (20/5.45)= rs 109