Find the dimensions of the rectangle of maximum area that can be formed from a 210-in. piece of wire. (use decimal notation. give your answer to three decimal places.)

does this problem require optimization over a closed interval or an open interval?

a. open

b. closed

  52.500 by 52.500 inches

Step-by-step explanation:

The rectangle with maximum area will be a square. Its side length will be 1/4 the perimeter, so is 210/4 = 52.5 inches.

The figure is a 52.500 inch square. The interval of optimization is closed.

Side lengths are restricted to the interval 0 to 105 inches.

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Any n-sided polygon with a given perimeter will have its maximum area when the polygon is regular. A regular 4-gon is a square.

c.

step-by-step explanation:

because first you have to add the 4x, 9x, and the 7x together and you get 20x and then you add the last numbers up and you get 5and then you put the subtraction sign in there and that's how you get the answer.

i dont have an answer

step-by-step explanation: