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.
Photo Credit Goodshoot/Goodshoot/Getty Images. Healthy bowel movements vary among individuals. Your normal might be once a day, while others go only every other day. If your bowel movements are difficult or uncomfortable due to hard, dry stool, you can help soften them. Dietary changes and herbal fiber supplements can help ease constipation.