SOLIDWORKS Design & Help

I cannot infer your intention, could you restate the issue. From what you have said it seems like you need to hide the sketch?

Thank you, I edited the question could you check please?

Delete your top face and curved face ,then do filled surface which should remove line,obviously then knit back into a solid if this is what you need

Thank you it actually worked! I was thinking of that but thought it would be complicated now iwill try it on bigger model and see,

Thank you so much!

There's a much easier way:

Go to View > Display > Tangent Edges removed.

Ta da…