Area of a rectangle with calculator. Definition and formula (original) (raw)
The number of square units it takes to completely fill a rectangle.
Formula: Width × Height
Try this Drag the orange dots to move and resize the rectangle. As the size of the rectangle changes, the area is recalculated.
Area formula
The area of a rectangle is given by multiplying the width times the height. As a formula: where
w is the width
h is the height
Calculator
| ENTER THE TWO SIDE LENGTHS | |
|---|---|
| Side 1 | clear |
| Side 2 | clear |
| Area: | |
| Perimeter: | |
| Diagonal: | |
Use the calculator above to calculate the properties of a rectangle.
Enter the two side lengths and the rest will be calculated. For example, enter the two side lengths. The area, perimeter and diagonal lengths will be found.
Try this
- In the figure above, click on "hide details"
- Drag the orange dots on the vertices to make a random-size rectangle.
- Now try to estimate the area of the rectangle just looking at the squares inside it When you done click "show details" to see how close you got.
Other polygon topics
General
- Polygon general definition
- Quadrilateral
- Regular polygon
- Irregular polygon
- Convex polygons
- Concave polygons
- Polygon diagonals
- Polygon triangles
- Apothem of a regular polygon
- Polygon center
- Radius of a regular polygon
- Incircle of a regular polygon
- Incenter of a regular polygon
- Circumcircle of a polygon
- Parallelogram inscribed in a quadrilateral
Types of polygon
- Square
- Diagonals of a square
- Rectangle
- Diagonals of a rectangle
- Golden rectangle
- Parallelogram
- Rhombus
- Trapezoid
- Trapezoid median
- Kite
- Inscribed (cyclic) quadrilateral
Area of various polygon types
- Regular polygon area
- Irregular polygon area
- Rhombus area
- Kite area
- Rectangle area
- Area of a square
- Trapezoid area
- Parallelogram area
Perimeter of various polygon types
- Perimeter of a polygon (regular and irregular)
- Perimeter of a triangle
- Perimeter of a rectangle
- Perimeter of a square
- Perimeter of a parallelogram
- Perimeter of a rhombus
- Perimeter of a trapezoid
- Perimeter of a kite
Angles associated with polygons
- Exterior angles of a polygon
- Interior angles of a polygon
- Relationship of interior/exterior angles
- Polygon central angle
Named polygons
- Tetragon, 4 sides
- Pentagon, 5 sides
- Hexagon, 6 sides
- Heptagon, 7 sides
- Octagon, 8 sides
- Nonagon Enneagon, 9 sides
- Decagon, 10 sides
- Undecagon, 11 sides
- Dodecagon, 12 sides
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