How to make circle out of tnt entitys

you can do this with a few steps.

1. make a local variable named "direction"
2. set the direction to 0.
3. after that, add a loop that repeats 360 times.
4. set direction to direction+1.
5. in the "world"->"actions" category there is a "summon entity of type {} with yaw:{} pitch:{} vx:{} vy:{} vz:{}" put this in the loop.
6. keep yaw and pitch 0.
7. set vy to how high you want it to fly, vx to the sine(found in math category with default "round", and sine is abbreviated as "sin".) of the "direction" variable, and vz to the cosine(found with sine and abbreviated as "cos".) of the "direction variable."
8. watch it work!

I recommend if you have the time, to learn trigonometric functions, as they can be very useful in the future.