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 b 2 2 2 = + The Pythagorean Formula A b C c B a 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 = e 3 SA = e 6 2 Cone: V = 1 3 r h 2 Sphere: V = 4 3 r 3 Kentucky Performance Rating for Educational Progress January 2012
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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
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