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December 21, 2014

December 21, 2014

Posted by **Gabby** on Monday, February 25, 2013 at 6:15pm.

Helen designs a rectangle with an area of 225 square units. Her rectangle is the largest rectangle (that is, with largest area) with whole-number side lengths that can be made from the perimeter of the rectangle.

A. Whay are the length and width of the rectangle?

B.what is the perimeter of the rectangle?

The second question is this:

Corinda has 400 ft of fencing to make a play area. She wants the fenced area to rectangular. What dimensions should she use in order to enclose the maximum possible area?

- Math ms sue please help -
**Gabby**, Monday, February 25, 2013 at 6:19pmI know that the answers for the question 1 is length=15 and width=15 and perimeter=60 but o don't know how to get that answer.

For the second question I know that the answer is 100 by 100 the dimensions but I don't know how to get that either. Please help!!!!!!'!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

- Math -
**Ms. Sue**, Monday, February 25, 2013 at 6:21pmThe square root of 225 is 15.

Perimeter = 4s

P = 2L + 2W

- Math -
**Gabby**, Monday, February 25, 2013 at 6:27pmI don't get it though can you be more specific?

- Math -
**Gabby**, Monday, February 25, 2013 at 6:29pmWhat about the second one?

- Math -
**Ms. Sue**, Monday, February 25, 2013 at 6:36pmThis makes me wonder how you got your answers.

You got 15 for the sides of the first one. For a square, you get 15 by taking the square root of the area.

In the second one, the perimeter is 400.

400/4 = 100

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