Right triangle: a² + b² = c² Enter any two side lengths and leave the third blank to solve for it. Leg a Leg b Hypotenuse c Understanding the Pythagorean Theorem The Pythagorean theorem describes a fixed relationship between the three sides of any right triangle, a triangle with one 90-degree angle. If a and…
Choose a shape and enter its dimensions SquareRectangleTriangleTrapezoidRegular Polygon Side (s) Length (l) Width (w) Side a Side b Side c Top (a) Bottom (b) Left leg (c) Right leg (d) Number of sides (n) Side length (s) Perimeter Formulas for Common Shapes Perimeter is the total distance around the outside edge of a two-dimensional…
Enter the radius or the diameter Radius (r) Diameter (d) Radius, Diameter, Area, and Circumference A circle is defined by a single measurement: its radius, the distance from the center to any point on the edge. The diameter is simply twice the radius, the distance straight across the circle through its center, so d =…
Choose a shape and enter its dimensions CubeSphereCylinderConeSquare Pyramid Side (s) Radius (r) Radius (r) Height (h) Radius (r) Height (h) Base side (b) Height (h) Volume Formulas for Common Solids Volume measures how much three-dimensional space a solid shape occupies, expressed in cubic units such as cubic inches or cubic centimeters. Unlike area, which…
Choose a shape and enter its dimensions CubeSphereCylinderConeRectangular PrismSquare Pyramid Side (s) Radius (r) Radius (r) Height (h) Radius (r) Height (h) Length (l) Width (w) Height (h) Base side (b) Height (h) Surface Area Formulas for Common Solids Surface area measures the total area covering the outside of a three-dimensional solid, the sum of…
Find the distance between two points Point 1 (x₁, y₁) Point 2 (x₂, y₂) The Distance Formula and the Pythagorean Theorem The distance formula finds the straight-line distance between two points on a coordinate plane, (x₁, y₁) and (x₂, y₂), using d = √((x₂ − x₁)² + (y₂ − y₁)²). It is not a separate…