parimeter and area

perimeter​

A perimeter is a closed path that encompasses, surrounds, or outlines either a two dimensional shape or a one-dimensional length. ... A calculated perimeter is the length of fence required to surround a yard or garden. The perimeter of a wheel/circle (its circumference) describes how far it will roll in one revolution.

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formulas of shape​

area of formula​

Area Formula

The area is the measurement of space enclosed by a closed geometric figure. Like the perimeter formula, there is also a set of area formula for polygons that can be represented using algebraic expressions.

For example, if you want to know the area of a square box with side 40 cm, you will use the formula:

Area of Square = a², where a is the side of the square.

Similarly, the area of a triangle can also be found using its Area formula (1/2 × b ×h).

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A Perimeter is the length of the boundary of a closed geometric figure. Algebraic expressions can be used to represent the perimeter formula for the regular polygons. Say that the length of each side of a regular polygon is l. The perimeter of shapes formula for each of the polygons can be given using the same variable l.

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Area of Square = a², where a is the side of the square.

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Perimeter of a Rectangle = 2 (L+B) = 2 (6 cm + 4 cm) = 2 × 10 cm = 20 cm.

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