Triangle:
Trapezoid:
Parallelogram:
Circle: C = 2πr; A = πr 2.
Circular sector: A = r 2 θ.
Circular arc: l = r θ.
Cylinder:
Cone:
Sphere:
Triangle:
Trapezoid:
Parallelogram:
Circle: C = 2πr; A = πr 2.
Circular sector: A = r 2 θ.
Circular arc: l = r θ.
Cylinder:
Cone:
Sphere: