Inside Space: AREA
Area is the amount of flat space a shape takes up. We measure it by counting unit squares. Tap or drag across the grid to paint a shape!
Total Area
0
sq units
Outside Edge: PERIMETER
Perimeter is the total length of the outside boundary. Imagine building a fence around a garden. Click each side of the rectangle to measure and add them up!
Equation
? +
? +
? +
? =
?
Perimeter Found!
8 units
8 units
5 units
5 units
The Formula Factory
Real builders don't count every single square. They use formulas! Adjust the Length and Width below to see how the formulas for Area and Perimeter update instantly.
Length (L)
6
Width (W)
4
Area Formula
A = Length × Width
6 × 4 = 24
Perimeter Formula
P = (L + W) + (L + W)
(6 + 4) + (6 + 4) = 20
L = 6
W = 4
Area: 24