Diana is building a half pipe so she can practice doing bike tricks. If she wants the radius of the pipe to be 16 feet, how long should the material be for the curved inner area? Please help me!!!

when rotating a figure 180 degrees, imagine that you are able to take the figure and turn it clockwise or counterclockwise around a center point. to rotate a figure 180 degrees, you will need to apply the rule (x, y) → (-x, -y). start by using a coordinate grid with coordinates for each vertex of the figure. the center point of the coordinate grid is located at (0, 0), which is what you will rotate the figure around. write down the original coordinates of the shape you are going to rotate. then, apply the rule. for example, coordinate (1, 2) becomes (-1, -2). another example would be, coordinate (-4, -2) becoming (4, 2). after you change each original coordinate to the rotated coordinate, you will draw your new figure.

step-by-step explanation:

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step-by-step explanation:

      2

  2 is to go somewhat to the top right of a because it is squared    

v= a h/3

1/8 is left? add a bit more info plz