Interactive step-by-step solver for calculating the distance around and the space inside shapes.
Learn about perimeter and area for different shapes through these examples.
Explain the difference between perimeter and area.
Think of fencing a garden or putting a border around a picture.
Imagine a rectangle with lines drawn along its edges.
Perimeter is the length of the boundary.
Think of the space inside a room or the surface of a table.
Imagine a rectangle filled with small squares.
Area is the space inside.
Calculate the perimeter of a rectangle with length 8 cm and width 5 cm.
Perimeter = 2 * (Length + Width)
Or, Perimeter = Length + Width + Length + Width
Perimeter = 2 * (8 + 5)
Perimeter = 2 * (13)
Perimeter = 26
Calculate the area of a rectangle with length 10 meters and width 6 meters.
Area = Length * Width
Area = 10 * 6
Area = 60
Result: The area of the rectangle is 60 square meters (m2).
Calculate the perimeter of a square with a side length of 7 cm.
Perimeter = 4 * Side
Or, Perimeter = Side + Side + Side + Side
Perimeter = 4 * 7
Perimeter = 28
Calculate the area of a square with a side length of 9 cm.
Area = Side * Side OR Area = Side2
Area = 9 * 9
Area = 81
Result: The area of the square is 81 square cm (cm2).
Calculate the area of a triangle with a base of 10 cm and a height of 6 cm.
Area = (1/2) * Base * Height
Or, Area = (Base * Height) / 2
Area = (1/2) * 10 * 6
Area = (10 * 6) / 2
Area = 60 / 2
Area = 30
Result: The area of the triangle is 30 square cm (cm2).
Enter a problem to calculate the perimeter or area of a rectangle, square, or triangle.
Note: Enter problems using formats like "perimeter of rectangle l=10 w=5", "area of square s=7", "area of triangle b=12 h=8". Specify the shape and necessary dimensions (l=length, w=width, s=side, b=base, h=height).