![]() Want to change the area unit? Simply click on the unit name, and a drop-down list will appear. Regular polygon area formula: A = n × a² × cot(π/n) / 4 A hexagonal prism, also called an octahedron, is a type of prism that is characterized by a hexagonal base.Quadrilateral area formula: A = e × f × sin(angle).Octagon area formula: A = 2 × (1 + √2) × a².You write down problems, solutions and notes to go back. Hexagon area formula: A = 3/2 × √3 × a² Calculate area, perimeter, sides and angles for triangles, circles and squares step-by-step Triangles Quadrilaterals Conic Shapes Angle Between Lines Line Intersection Related Symbolab blog posts My Notebook, the Symbolab way Math notebooks have been around for hundreds of years.Trapezoid area formula: A = (a + b) × h / 2.Circle sector area formula: A = r² × angle / 2.Other equations, which use parameters such as the circumradius or perimeter, can also be used to determine the area. For the sake of clarity, we'll list the equations only - their images, explanations and derivations may be found in the separate paragraphs below (and also in tools dedicated to each specific shape).Īre you ready? Here are the most important and useful area formulas for sixteen geometric shapes: If you want to calculate the regular polygon parameters directly from equations, all you need to know is the polygon shape and its side length: Area area n × a × cot(/n)/ 4 Where n- number of sides, a - side length. Well, of course, it depends on the shape! Below you'll find formulas for all sixteen shapes featured in our area calculator.
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