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 $s_2$).
Water and Warm Liquids. Water and warm liquids can soften stool. Liquids can help ease pressure in your intestines caused by hard, dry stools. In addition, warm liquids like coffee, hot lemon water and tea are considered natural laxatives that push waste and toxins through your intestines.
Daily use of stool softeners? I often heard in rehab (and see suggested on here) that taking stool softeners daily can greatly help with stool firmness for us in the SCI population. Recently I was reading the directions on the bottle (go figure), and it says that taking one or two tablets should induce a bowel movement in around 12 hours.