Abcdefghij is a regular decagon with a radius of 25.89 units and a side length of 16. find the area of abcdefghij. round the answer to the nearest tenth.

Area of the decagon is 1969.84 unit²

Step-by-step explanation:

ABCDEFGHIJ is a regular decagon with radius of 25.89 units and a side length of 16.

We have to find the area of this decagon.

If we join all the diagonals of the given decagon, it will be divides in 10 triangles. Center of the decagon is point A.

In the figure attached, sides AB and AC will be equal to 25.89 and side of the decagon is 16 units.

Now we know area of decagon = 10×(Area of triangle ABC)

                                                     = 10×

Side AD =

              =

              =

              = 24.622 units

Now area of decagon = 10×()

                                     = 5×24.622×16

                                     = 1969.84 unit²

answer: idk

step-by-step explanation:

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v