To find out how long the dough was left to rise in the bowl, we first need to know the total rise time and the time it was left to rise in the pan.
Given that the total rise time is 1 3/4 hours and that after forming into a loaf, the dough was left to rise in the pan for 1/2 an hour.
To find the rise time in the bowl, we will subtract the rise time in the pan from the total rise time, which gives us:
1 3/4 hours - 1/2 hour = 1.75 hours - 0.5 hour = 1.25 hours
Therefore, the dough was left to rise in the bowl for 1 1/4 hours.