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.
Step-by-step explanation:
shape Formula Variables
Triangle
Perimeter = a + b + c
Square
Perimeter = 4 × a
a = length of side
Rectangle
Perimeter = 2 × (w + h)
w = width
h = height
Parallelogram Quadrilateral
Perimeter = a + b + c + d
Circle
Circumference = 2πr
r = radius
Sector
Perimeter = r(θ+2)
r = radius
θ = angle in radians
