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.
It is this absorption and swelling that assists the body in forming a soft, lubricated, bulkier stool. The presence of this softer, bulkier stool stimulates the bowel to contract, and pass the stool more easily, helping to relieve constipation. Benefits: Safe for long term use.