• Welcome
• Practice Tests
• Drills
• Vocabulary
• SAT eBook

SAT Prep | Reference Table

Symbols and Their Meanings
= is equal to	≤ is less than or equal to
≠ is unequal to	≥ is greater than or equal to
< less than	|| is parallel to
> is greater than	⊥ is perpendicular to

FORMULAS
DESCRIPTION	FORMULA
Area (A) of a:
square	A = s2; where s = side
rectangle	A = lw; where l = length, w = width
parallelogram	A = bh; where b = base, h = height
triangle	A = ½bh; where b = base, h = height
circle	A = πr2r = radius
Perimeter (P) of a:
square	P = 4s; where s = side
rectangle	P = 2l + 2w; where l = length, w = width
triangle	P = a + b + c; where a, b, and c are the sides
circumference (C) of a circle	C = πd; where π = 3.14, d = diameter = 2r
Volume (V) of a:
cube	V = s3; where s = side
rectangular container	V = lwh; where l = length, w = width, h = height
Pythagorean Theorem	c2 = a2 + b2; where c = hypotenuse, a and b are legs of a right triangle
Distance (d) of a:
between two points in a plane	where (x1, y1) and (x2, y2) are two points in a plane
as a function of rate and time	d = rt; where r = rate, t = time
between two points in a plane	xs are the values for which a mean is desired, and n = number of values in the series/td>
Median	median = the point in an ordered set of numbers at which half of the numbers are above and half of the numbers are below this value
Simple Interest (i)	i = prt; where p = principal, r = rate, t = time
Total Cost (c)	c = nr; where n = number of units, r = cost per unit

Navigate

Tell a friend about SAT Prep at eNotes.