﻿ Rectangle: - on line calculation, formula - FORMIAX ﻿

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Rectangle - perimeter and area

A = 2*a + 2*b

A = a * b

A = area

P = perimeter

a = side "a"

b = side "b"

WHAT IS IT ?

A rectangle is a four-sided polygon, or quadrilateral, with opposite sides of equal length and all internal angles equal to 90 degrees. The properties of a rectangle include diagonals that are equal in length and bisect each other. The area of a rectangle can be calculated using the formula: Area = length * width, and the perimeter can be calculated as: Perimeter = 2 * (length + width). Rectangles are fundamental shapes in geometry and are commonly used in various applications in mathematics, design, and architecture.

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CALCULATION:

Enter unit e.g.: inch

Enter side "a"

Enter side "b"

Enter the number of decimal places

EXAMPLE:

The sides of the rectangle are, for example, a is 8 cm and b is 6 cm.

Thus

a = 8,

b = 6.

perimeter of the rectangle:

We use the formula

C = 2 * a + 2 * b

thus

C = 2 * 8 + 2 * 6

C = 28 cm

area of the rectangle:

We use the formula

A = a * b

thus

A = 8 * 6

A = 48 cm²

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