Q. 19

# The dimensions of

Given,

Ratio of dimensions of rectangular box = 2:3:4

Let length of box = 2x m

Let height = 4x m

Area of sheet of paper required for covering it = total surface area of cuboid

= Cost of covering it with sheet of paper at Rs.9.50 /m2= Cost of covering it with sheet of paper at rate Rs.8/m2 = = = = = So,

Length of box = 2x = 2×4 = 8 m

Breadth of box = 3x = 3×4 = 12 m

Height of box = 4x = 4×4 = 16 m

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