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jonny [76]
3 years ago
6

A box with no top is to be constructed from a piece of cardboard whose length measures 5 in. more than its width. The box is to

be formed by cutting squares that measure 2 in. on each side from the four corners and then folding up the sides. If the volume of the box will be 100 in.cubed​, what are the dimensions of the piece of​ cardboard?
Mathematics
1 answer:
ddd [48]3 years ago
8 0

Answer:

9\text{ inch, }14\text{ inch, }2\text{ inch}

Step-by-step explanation:

GIVEN: A box with no top is to be constructed from a piece of cardboard whose length measures 5\text{ inch} more than its width. The box is to be formed by cutting squares that measure 2\text{ inch} on each side from the four corners and then folding up the sides.

TO FIND: If the volume of the box will be 100\text{ inch}^3​, what are the dimensions of the piece of​ cardboard.

SOLUTION:

Let the width of cardboard be x

length of cardboard =x+5\text{ inch}

As box is formed by cutting 2\text{ inch } squares from corners of cardboard

length of cardboard =x+5-4=x+1\text{ inch}

width of cardboard  =x-4\text{ inch}

height of cardboard =2\text{ inch}

volume of cardboard =\text{length}\times\text{width}\times\text{height}

                                   =2(x+1)(x-4)

x^2-3x-54=0

solving we get

x=9,-6

width of cardboard =9\text{ inch}

length of cardboard =x+5=14\text{ inch}

height of cardboard =2\text{ inch}

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