# Common geometry formulas

Here, we provide you with common geometry formulas for some basic shapes

Rectangle: Perimeter = l + l + w + w = 2 × l + 2 × w

Area = l × w

Square: Perimeter = s + s + s + s = 4 × s

Area = s2

Parallelogram: Perimeter = a + a + b + b = 2 × a + 2 × b

Area = b × h

Rhombus: Perimeter = b + b + b + b = 4 × b

Area = b × h

Triangle: Perimeter = a + b + c

Area = (b × h)/2

Trapezoid: Perimeter = a + b + c + d Circle: Perimeter = 2 × pi × r or Perimeter = pi × d

Area = pi × r2 or Area = (pi × d2)/4

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