CLASS 9 MATHS CHAPTER 13-SURFACE AREAS AND VOLUMES

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Exercise 13.1 Question 1. A plastic box 1.5 m long, 1.25 m wide and 65 cm deep is to be made. It is to be open 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 …

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