308 + 397 + 389 + 286 = 1380
He drove 1380 miles
Answer: the leg x would equal 76.8, or 77 rounded. The actual number would be 76.8374908492.
58*0.71= around 41.2 grams of coco. This is because we can multiply to get this.
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Answer:



Step-by-step explanation:
Given




Required
The dimension that minimizes the cost
The volume is:

This gives:

Substitute 


Make H the subject


The surface area is:
Area = Area of Bottom + Area of Sides
So, we have:

The cost is:



Substitute:
and 



To minimize the cost, we differentiate

Then set to 0


Rewrite as:

Divide both sides by W

Rewrite as:

Solve for 


Take cube roots

Recall that:







Hence, the dimension that minimizes the cost is:


