Question

An open box is made if wood 3 cm thick .its external dimensions are 1.46 m, 1.16 m and 8.3 dm.find the cost of painting the inner surface area 75 paise /100 cm square

Answer 1

firstly u have to find the inner dimensions
inner length=146cm-(2×3) cm
now find the inner breadth and height.
and then find area
at last
75\100×area

Answer 2

hope it helps you

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