It is 4W kg 790 W kg. Multiply the radius with π to find the outer inner areas. Surface Area Calculator Surface Area Formulas Math Tutorials Studying Math Learning Mathematics Tube Lateral Surface Area. . The surface area of a square pyramid is comprised of the area of its square base and the area of each of its four triangular faces. Calculate the unknown defining side lengths circumferences volumes or radii of a various geometric shapes with any 2 known variables. Given height h and edge length a the surface area can be calculated using the following equations. For many clinical purposes. A weight-based formula that does not include a square root making it easier to use was proposed by Costeff and recently validated for the pediatric age group. Our surface area calculator can find the surface area of seven different solids. If a prism has a surface area of 50 square inches that means it takes 50 of those