Perimeter & Area Formulas

Perimeter (परिमाप): Sum of all sides

Rectangle: • Perimeter = 2(length + width) • Area = length × width

Square: • Perimeter = 4 × side • Area = side × side = side²

Triangle: • Perimeter = sum of 3 sides • Area = ½ × base × height

Circle: • Circumference = 2πr or πd • Area = πr² • π ≈ 3.14 or 22/7

Units: • Perimeter: cm, m (linear) • Area: cm², m² (square)