[Massachusetts Comprehensive Assessment System (MCAS) Logo] Massachusetts Comprehensive Assessment System Grade 7 Mathematics Reference Sheet PERIMETER FORMULAS square . . . . . . . . . . .[P equals 4 s] rectangle . . . . . . . . .[P equals two b plus two h or P equals two l plus two w] triangle . . . . . . . . . .[P equals a plus b plus c] AREA FORMULAS square . . . . . . . . . . .[A equals s squared] rectangle . . . . . . . . .[A equals bh or A equals lw] parallelogram . . . . .[A equals bh] triangle . . . . . . . . . .[A equals one half bh] trapezoid . . . . . . . . .[A equals one half h multiplied by b (subscript 1) plus b (subscript 2) in parenthesis] circle . . . . . . . . . . . .[A equals pi sign r squared] TOTAL SURFACE AREA FORMULAS rectangular prism . .[SA equals two (lw) plus two (hw) plus two (lh)] cylinder . . . . . . . . . .[SA equals two pi sign r squared plus two pi sign r h] VOLUME FORMULAS rectangular prism. . . . . . .[V equals lwh or V equals Bh (B equals area of a base)] cube . . . . . . . . . . . . . . . . . [V equals s cubed (s equals length of an edge)] cylinder. . . . . . . . . . . . . . .[V equals pi sign r squared h] CIRCLE FORMULAS [C equals two pi sign r or C equals pi sign d] [A equals pi sign r squared]