The side of an equilateral triangle is 3.5 cm find its perimeter

Equilateral Triangle Shape A = angle A a = side a B = angle B b = side b C = angle C c = side c A = B = C = 60° a = b = c K = area P = perimeter s = semiperimeter h = altitude *Length units are for your reference only since the value of the resulting lengths will always be the same no matter what the units are. Calculator Use An equilateral triangle is a special case of a triangle where all 3 sides have equal length and all 3 angles are equal to 60 degrees. The altitude shown h is hb or, the altitude of b. For equilateral triangles h = ha = hb = hc. If you have any 1 known you can find the other 4 unknowns. So if you know the length of a side = a, or the perimeter = P, or the semiperimeter = s, or the area = K, or the altitude = h, you can calculate the other values. Below are the 5 different choices of calculations you can make with this equilateral triangle calculator. Formulas and Calculations for a equilateral triangle: • Perimeter of Equilateral Triangle: P = 3a • Semiperimeter of Equilateral Triangle: s = 3a / 2 • Area of Equilateral Triangle: K = (1/4) * √3 * a 2 • Altitude of Equilateral Triangle h = (1/2) * √3 * a • Angles of Equilateral Triangle: A = B = C = 60° • Sides of Equilateral Triangle: a = b = c 1. Given the side find the perimeter, semiperimeter, area and altitude • a is known; find P, s, K and h • P = 3a • s = 3a / 2 • K = (1/4) * √3 * a 2 • h = (1/2) * √3 * a 2. Given the perimeter find the side, semiperimeter, area and altitude • P is known; find a, ...

Perimeter of Polygon The perimeter of a polygon is defined as the sum of the length of the boundary of the polygon. In other words, we say that the total distance covered by the sides of any polygon gives its perimeter. In this lesson, we will learn to find the perimeter of polygons, and find the difference between the area and perimeter of the polygons in detail. 1. 2. 3. 4. 5. Difference Between Area and Perimeter of Polygon The area and perimeter of polygons can be calculated if the lengths of the sides of the polygon are known. The following table shows the difference between the Criteria of Difference Area of Polygon Perimeter of Polygon Definition The space enclosed by any polygon is known as its area. The perimeter of a polygon is defined as the total length of its boundary. Formula The area of polygons is calculated using different formulas depending on the type of polygon. For example, the area of a square = a 2, where 'a' is its side length; the area of a rectangle = length × width, The basic formula used to find the perimeter of a polygon is, Perimeter = sum of all sides. Unit The area of polygons is expressed in square units like meters 2, centimeters 2, inches 2, feet 2, etc. The perimeter is expressed in linear units like meters, centimeters, inches, feet, etc. There is one similarity between the area and perimeter of a polygon. Both depend directly on the length of the sides of the Formula for Perimeter of Polygon We can categorize a polygon as a regular or ...