Surface Area of a Rectangular Pyramid. The surface area of a regular square pyramid is the sum of area of the base and area of four isosceles triangles. But for rectangular pyramid, with rectangular base, we can not use the standard formula of surface area because there is more than one slant height ($s_1$ and $s_2$).
Step 1. Drink plenty of water with your meals and between meals. Water helps soften your stool. If you do not drink enough fluids, your body will pull water from the colon, hardening the stools. Also avoid caffeinated beverages, which cause your body to lose water.
While others soften the stool, add bulk and improve the function of colon muscles that promotes healthy and regular bowel movements. So if you're wanting a product that strictly works as a laxative you will make a different choice in herbs than someone who is wanting to add bulk or kill parasites.