Square
Calculate area and perimeter of a square.
Area = side²
Perimeter = 4 × side
Rectangle
Calculate area and perimeter of a rectangle.
Area = length × width
Perimeter = 2(l + w)
Circle
Calculate area and circumference of a circle.
Area = πr²
Circumference = 2πr
Triangle
Calculate area and perimeter of a triangle.
Area = ½bh
Perimeter = a + b + c
Sphere
Calculate volume and surface area of a sphere.
Volume = 4/3πr³
Surface Area = 4πr²
Cylinder
Calculate volume and surface area of a cylinder.
Volume = πr²h
Surface Area = 2πr(h + r)