Confusion Matrix for Multiclass Classification Precision Recall Weighted F1 Score by Mahesh Huddar

What is the accuracy of the classifier?

Actually only the diagonal elements are the correctly predicted values right?

Thank you, sir. How can we calculate overall precision, recall, and F1 score from the confusion matrix that you have explained?

Kindly tell us formula for weighted F1 the way you wrote for Macro F1 . thanks