lisalisani86
Answered

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You have been hired to design a box (rectangular prism) with a volume of 24m^3. The height of the box must be 2m.

a) Fill in the blanks of the attached table. Use whole numbers for dimensions.

b) What dimensions would you use to minimize the costs of making the box? Explain.​

You Have Been Hired To Design A Box Rectangular Prism With A Volume Of 24m3 The Height Of The Box Must Be 2ma Fill In The Blanks Of The Attached Table Use Whole class=

Sagot :

sqdancefan

Answer:

 (a) See attached

  (b) 3 m by 4 m by 2 m, has least surface area

Step-by-step explanation:

You want the width and area of a 2 m high box that has a volume of 24 m³, given its length is a whole number of meters, and you want dimensions that minimize the cost of the box.

Width

The volume is given by ...

  V = LWH

We are given the volume and the height, and asked to find the width for various lengths.

  24 = LW·2

  W = 12/L . . . . . . . solve for W

The values of width for the various lengths are shown in the attachment.

Area

The surface area of the box is given by ...

  A = 2(LW +H(L +W))

We know that LW = 12, so this becomes ...

  A = 2(12 +2(L +W)) = 24 +4(L +W)

The values of L+W are 13, 8, 7, and the corresponding areas are 76, 56, 52 square meters. These are shown in the table in the attachment.

Cost

We presume the main driver of the cost of the box is its surface area, so the cost will be minimized when the area is minimized. This will be the case for a box with dimensions that are either of ...

 3 m long by 4 m wide by 2 m high

  4 m long by 3 m wide by 2 m high

View image sqdancefan
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