Plz ? ! guving alexandra is installing edge material around her yard. she has 400 ft of edge material to surround three sides of her rectangular yard. the fourth side will be against her deck and does not need edging. what is the maximum area that can be enclosed by the edging? enter your answer in the box.

The answer is 20,000 feet squared.

Step-by-step explanation: I don't know how ya'll got that one right but that's not how your supposed to do it. How I am currently getting taught is figuring out the length of the side parallel to the deck.

That equation is 400-2x

Then, you do this to solve for area;

A=L*W             (substitute)

A=L(400-2x)  

A=x(400-2x)

A=-2x^2 + 400x

Then, to find the x coordinate of the parabola, you do -b/2(a)

This substituted is -400 divided by -4, which equals 100.

So, now we know that x=100. substitute in 100 for x, and we get;

A=-2(100^2) + 400*100

A=-20,000+40,000 which equals...

20,000

a net is a diagram that shows a “flattened” view of a solid. in a net, each face and base is shown with all of its dimensions. a net can also serve as a pattern to build a three-dimensional solid.

a pyramid is a three-dimensional object with a base that is a polygon and triangular faces that meet at one vertex.

" the net of a triangular pyramid consists of four triangles. the base here we are given of the pyramid is a equilateral   triangle, and the lateral faces are also triangles "

i'm sure goog can you get that answer