Here is a perfect trick to draw a 3D sphere so fast in Solidworks.
Please click it worked below.. ;)
Open a part file in Solidworks and Open a sketch whereever you want (Top plane, Right Plane, Front plane or any other plane that is made by you)
-"Ön Düzlem" means Front Plane in Turkish. My operating system's default language is Turkish, i can not change my SW fully in English-
Draw a circle. (With two point circle) That will help you to attach your drawings on some points like attaching the center point of circle to the origin.)
Use smart dimension to size your circle. That will make your drawing fully defined. (blue lines will turn to black.)
Select centerline (contionous line will work too but centerline is better) and draw a vertical line on the horizontal center of the circle.
Select trim tool and click on "trim to closest". Than click on the left or right side of the circle (directly to the line) to get a half circle. Click on the green button on the top right to confirm trimming.
Now you have a half circle. Click on the sketch confirmation button on the top right.
Click on the Features on the top. And then click "Revolved Boss/Base"
After clicking "Revolved Boss/Base click on the vertical line on the sketch. (it will work on this skecth no matter where you clicked. But on your future drawings that will help you to click on axis line. This feature will select the revolve axis automatically that you clicked first.)
You can change the filling angle as you can see on the image. We select 360 degrees to get a full sphere.
Then click to confirmation botton on the top right.
Here you have a basic sphere. you can find and right click on the sketch then edit it to change the radius.
(give names to your sketches. that will help you in the future. you can do it by selecting the sketch on feature tree and then pressing f2 button on your keyboard.)
Hope this tutorial worked for you. If yes click on "it worked below" :) thanks.