Square

a x b

Cube

a3

Cube

6 x a2

Parallelogram

b x h

Irregular Prism

b x h

Sphere

4 x pi x r2

where pi = p = 3.14

Trapezoid

h/2 (b1 + b2)

Cylinder

b x h = pi x r2 x h

where pi = p = 3.14

Circle

pi x r2

where pi = p = 3.14

Pyramid

(1/3) x b x h

Ellipse

pi x r1 x r2

where pi = p = 3.14

Cone

(1/3) x b x h = 1/3 x pi x r2 x h

where pi = p = 3.14

Triangle

(1/2) x b x h

Sphere

(4/3) x pi x r2

where pi = p = 3.14

Equilateral Triangle

(1/4) x √(3)a2

Ellipsoid

(4/3) x pi x r1 x r2 x r3

where pi = p = 3.14