Flashcards: PreAlgebra Formulas

Area of a rectangle

A=bh

Area of a square

A=s²

Area of a triangle

A=½bh

Perimeter of a rectangle

P=2l+2w

Perimeter of a square

P=4s

Perimeter of a triangle

P=a+b+c

Area of a Circle

A=πr²

Circumference of a Circle

C = 2πr or C = πd

Volume of a Rectangular Prism

V=lwh

Area of a trapezoid

A = ½ *h*(b₁+b₂)