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 $s_2$).
Flaxseeds. Another food to help relieve constipation is flaxseeds. Flaxseeds are rich in fiber and essential fatty acids, healthy fats that soften stool and ease constipation. The best way to use flaxseeds as a stool softener is to add approximately 2 tablespoons of flaxseed to your cereal or meals.
Stool softeners (such as Colace and Docusate Calcium) soften the stool, making it easier to pass. Stool softeners can be most effective if you drink plenty of water throughout the day. Osmotic laxatives, such as Fleet Phospho-Soda, Milk of Magnesia, or Miralax, and nonabsorbable sugars (such as lactulose or sorbitol), hold fluids in the intestine.