Answer:
625 ft^2
Step-by-step explanation:
Given
--- perimeter
Required
The largest area
The perimeter is calculated as:

So, we have:

Divide both sides by 2

Make L the subject

The area is calculated as:

Substitute 

Open bracket

Differentiate with respect to W

Set to 0; to get the maximum value of W

Collect like terms

Divide by -2

So, the maximum area is:




(-19,55) x is equal to -19 and y is equal to 55
Answer:
11
Step-by-step explanation:
Answer:
200 would be 1 percent of 2000
Step-by-step explanation:
12/16=3/4, 3/4*8=6. Therefore Caitlin still has 6 km to go, So d=6