Formulas for Perimeter and Area:

Rectangle

Area= (length)width)

P=2l+2w

Square:

P = 4s

A = s²

TRIANGLE:

P = A + B + C

A= ½ BH                           

                                     A                                B

                                                        C

Trapezoid:                                             

                                                                         d

P = a + b + c + d                                 hhhhhh    height

A = ½ (b + d)h                          a                       c

                                                             b    

Circumference of a Circle:   

C=2pr                                     

Area of a circle: A= pr²

VOLUMES:

RECTANGULAR SOLID

                                                         L

V = L ·  W  ·  H

CYLINDER:

V = B^*H, WHERE   B^* = AREA OF THE BASE = pr²

^CONE:

V = 1/3 B^*H, WHERE   B^* = AREA OF THE BASE = pr²

^SPHERE:

V = 4/3 p r³

PYRAMID:

V = 1/3 B^*H, WHERE   B^* = AREA OF THE BASE

IF BASE IS A TRIANGLE, THEN B^* =1/2 bh.

IF THE BASE IS A SQUARE, THEN B^* = S²

IF THE BASE IS A RECTANGLE THEN B^* = L ·  W