An example of a loaf of bread is as the figure below:
Figure 1: A Loaf of Bread (source: http://www.wikihow.com/Slice-Bread)
I am going to calculate the volume of a loaf of bread in the figure above. First of all, the cross-section of the loaf is as shown in the Figure 2 below:
Figure 2: Cross-section of the loaf of bread.
The cross-section of the loaf can be viewed as a combination of half of an ellipse and a rectangle, as in Figure 3 below:
Figure 3: Cross-section of the loaf as a combination of half of an ellipse and a rectangle.
A=area of12an ellipse+area of rectangleA=πS2r+h2r -----(1)
...