Calculation of the area of a geometric figure.
Calculation of the area of a geometric figure. : Online area calculator which allows to calculate the area of a rectangle, square, triangle or circle.
Syntax :- area(length;width) for a rectangle
- area(length) for a square
- area(length;length;length) for a triangle
- area(radius) for a circle
- area(`3;2`) , returns 6
- area(`4`) , returns [16;`16pi`], 16 is the area of a square of length 4, and `16pi` is the area of a circle of radius 4.
The calculator is able to calculate the usual areas online. It can calculate the area of a rectangle, the area of a square, the area of a circle, the area of a triangle. The area calculator specifies the calculation steps to obtain the result.
Calculating the area of a rectangle
The area of a rectangle is given by the formula `(L*l)` where L represents the length and l the width a side. The area of a rectangle is equal to the product of its sides. The area calculator supports both numerical and literal expressions, the calculated length is returned in exact and approximate form.
Thus, the calculation of the area of a rectangle whose length is 3 and width is 2 is done by entering the following formula area(`3;2`).
Calculation of the area of a square
The area calculator is able to calculate the area of a square which is given by the formula `a^2` where a is the length of one side of the square. The calculated area is returned in exact and approximate form.
Thus, the calculation of the area of a square whose length of one side is 3 is done by entering the following formula area(`3`).
Calculation of the area of a circle
The area calculator is able to calculate the area of a circle, which is given by the formula `pi*r^2` where r is the radius of the circle. The calculated area is returned in exact and approximate form.
Thus, the calculation of the area of a circle of radius 3 is done by entering the following formula area(`3`).
Calculation of the area of a triangle
The area calculator is able to calculate the area of a triangle from its 3 sides using Heron's formula, which is written as follows: `S=sqrt(p*(p-a)*(p-b)*(p-c)`, where a, b, c represent the length of the sides of the triangle, and p is the half perimeter `p=(a+b+c)/2`. The calculated area is returned in exact and approximate form.
Thus, the calculation of the area of a triangle whose length of each side would be respectively equal to 5, 6 and 7 is done by entering the following formula area(`5;6;7`).
Games and quizzes on calculating the areas of common geometric figures
To apply the different calculation formulas, several quizzes on the calculation of the area of the square, the rectangle, and the circle are proposed.
- Area of a square : area_square. Area online calculator that can calculate the area of a square from the length of a side.
- Area of a circle : area_circle. Area online calculator that can calculate the area of a circle from its radius or from its diameter.
- Area of a rectangle : area_rectangle. Area online calculator that can calculate the area of a rectangle from its length and its width.
- Find equation of a straight line from two points : equation_straight_line. The equation straight line calculator allows to calculate the equation of a straight line from the coordinates of two points with step by step calculation.
- Perimeter calculator : perimeter. Online perimeter calculator that calculates rectangle perimeter, square perimeter, triangle perimeter or circle perimeter.
- Perimeter of a square : perimeter_square. The online calculator allows to calculate the perimeter of a square from the length of a side.
- Perimeter of a circle : perimeter_circle. Online calculator that calculates the perimeter of a circle from its radius.
- Perimeter of a rectangle : perimeter_rectangle. The online calculator allows to calculate the perimeter of a rectangle from its length and its width.
- Pythagorean theorem calculator : pythagorean. The calculator uses the Pythagorean theorem to verify that a triangle is right-angled or to find the length of one side of a right-angled triangle.
- Calculation of the area of a geometric figure. : area. Online area calculator which allows to calculate the area of a rectangle, square, triangle or circle.
- Volume of a cube : volume_cube. The online calculator allows to calculate the volume of a cube from the length of a side.
- Volume of a rectangular parallelepiped : volume_rectangle. The online calculator allows to calculate the volume of a rectangle from its length, its width and height.
- Volume of a sphere : volume_sphere. The online calculator allows to calculate the volume of a sphere from its radius.