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Problem

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Textbook Expert
Textbook ExpertVerified Tutor
10 Nov 2021

Given information

A rectangular storage container with an open top is to have a volume of . The length of its base is twice the width. Material for the base costs  per square meter. Material for the sides costs  per square meter.

Step-by-step explanation

Step 1.

Let  and  be the length and width of the base, and  be the height.

According to the question, the rectangular storage container with an open top is to have volume of with length of its base is twice the width.

Length  

Volume of open box    
 
Substitute the values in above equation, we get 

    

 

 

Let  and  be the length and width of the base, and  be the height of cuboid.

The lateral surface area of cuboid  

 

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