Calculate area and perimeter for 5 shapes: rectangle, square, circle, triangle, and trapezoid.
Select Shape
Room floor — Rectangle 5m × 4m
Area = 5 × 4 = 20 m² | Perimeter = 18 m
Pizza — Circle with radius 15 cm
Area = π × 15² = 706.86 cm²
Garden plot — Triangle base 10m, height 6m
Area = ½ × 10 × 6 = 30 m²
Make sure all inputs use the same unit (all in cm, or all in ft). The result will be in that unit squared (e.g. cm²).