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.
Take an over-the-counter laxative or stool softener. A wide array of laxatives and other softeners are available to help soften stool. You can take a stool softener in capsule, tablet, liquid, or syrup form. Follow the instructions on the package to determine the correct dosage. Ask your doctor or pharmacist for recommendations as to what medication to take.