KENTUCKY MATHEMATICS REFERENCE SHEET Grades 7 and 8

FORMULAS FOR PLANE FIGURES

Parallelogram:

Trapezoid:

Triangle:

Circle:

Right Triangle:

A bh =

A b b h= +( )1 2 1 2

A bh = 1 2

C r= 2�

A r= � 2

c a b2 2 2= +

The Pythagorean Formula A

b

C

c

Ba

FORMULAS FOR SOLID FIGURES

Right Prism: V = Bh (B is the area of the base.)

Right Cylinder: V = r h� 2

Regular Pyramid: V = 1 3 Bh

Cube: V = e3

SA = e6 2

Cone: V = 1 3

r h� 2

Sphere: V = 4 3

r� 3

Kentucky Performance Rating for Educational Progress January 2012