Question

what is a formula of perimeter. please tell fast​

Answer 1

Step-by-step explanation:

perimeter of rectangle = 2(L+B)

perimeter of square = 4× side

Answer 2

Answer:

The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides. x is in this case the length of the rectangle while y is the width of the rectangle. The perimeter, P, is: P=x+x+y+y.

Step-by-step explanation:

Since all sides of a square are equal, we only need one side to find its perimeter. The perimeter of the given square is: a + a + a + a = 4 a units. Hence, the formula of the perimeter of a square = 4 × (length of any one side).

● Perimeter of triangle = (a + b + c); (a, b, c are 3 sides of a triangle) ● Area of triangle = √(s(s - a) (s - b) (s - c)); (s is the semi-perimeter of triangle) ● S = 1/2 (a + b + c) ● Area of triangle = 1/2 × b × h; (b base , h height)