firstextrude cube&sphere

step1: highlight planes step2: using center rectangle tool click center point nd drag out step3: define object by using smart dimension tool setting height and width to 90 mm step4: once shape is made click boss extrude in the features tab and click the shape that was made setting length to 90mm making a perfect cube step5: then right click any face of the cube and click the sketch ( the surface of the object should light up blue) looking at the object head on usually makes sketching the easiest step6:choosing the line tool and selecting centerline you can create a CenterPoint by drawing two lines vertically and horizontally from the middle of the edge making a crossing point. step7: now that a point has been made you can use the center rectangle tool and select the CenterPoint you created step8: drag the tool out and set size to 45mm using smart dimension tool step9: trim lines inside the square you made by selecting the trim entities tool step10: by clicking the shape you made then clicking extruded cut you will then set the length to 90mm creating a cut out through the whole object. step 11: repeat steps 5-10 on two more faces of the object step12: create a line through the object on the front plane by using the center line tool step13: using the circle tool, click the center of the line then drag to any size wanted step 14: cut circle in half by using trim entities tool creating a half circle step15: using revolve boss base, click the straight edge of the circle then set the rotation to 360 creating a sphere