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.
Soluble fibre. Soluble fibre can be digested by your body. It may help to reduce the amount of cholesterol in your blood. If you have constipation, gradually increasing sources of soluble fibre â such as fruit and vegetables, oats and golden linseeds â can help soften your stools and make them easier to pass. Foods that contain soluble fibre include: 1  oats, barley and rye.