# HiSET® Math: Formulas You Will Be Given During the Test

The HiSET® Math test is easier than you think. If you don’t believe us, here’s proof: You will have a formula sheet during the test that includes some of the formulas you’ll need. So you only need to learn how to use these formulas, but you don’t need to memorize them. Great, isn’t it?

And there’s more: We at Union Test Prep will spoil you by giving you the formulas before the test, so you can practice using them to solve our free sample problems for the HiSET® Math Test.

We also have three charts of formulas that are not given to you during the test, but that will be helpful to know. They are:

Geometry Formulas You Need to Know for the HiSET® Math Test

Algebra Formulas You Need to Know for the HiSET® Math Test

Statistics and Probability Formulas You Need to Know for the HiSET® Math Test

## Formulas You Will Be Given for the HiSET® Math Test

Category Formula Symbols
Perimeter $$P = (2 \cdot l) + (2 \cdot w)$$ $$P$$ = Perimeter of a rectangle
$$l$$ = Length
$$w$$ = Width
Perimeter/
Circumference
$$C = 2 \cdot \pi \cdot r$$ $$C$$ = Circumference of a circle
$$\pi$$ = 3.1416
$$r$$ = Radius
Area $$A=\pi \cdot r^2$$ $$A$$ = Area of a circle
$$\pi$$ = 3.1416
$$r$$ = Radius
Area $$A = \frac{1}{2} b \cdot h$$ $$A$$ = Area of a triangle
$$b$$ = Base
$$h$$ = Height
Area $$A=b \cdot h$$ $$A$$ = Area of a parallelogram
$$b$$ = Base
$$h$$ = Height
Area $$A = h \cdot \frac{(b_1+b_2)}{2}$$ $$A$$ = Area of a trapezoid
$$h$$ = Height
$$b_n$$ = Base n
Volume $$V = a \cdot h$$ $$V$$ = Volume of a prism or cylinder
$$a$$ = Area of the base
$$h$$ = Height
Volume $$V = \frac{1}{3} \cdot a \cdot h$$ $$V$$ = Volume of a pyramid or cone
$$a$$ = Area of the base
$$h$$ = Height
Volume $$V = \frac{4}{3} \cdot \pi \cdot r^3$$ $$V$$ = Volume of a sphere
$$\pi$$ = 3.1416
$$r$$ = radius
Length
Equivalents
$$1 \ ft = 12\ in$$
$$1 \ yd = 3 \ ft$$
$$1 \ mi = 5 \ 280 \ ft$$
$$1 \ m = 1 \ 000 \ mm$$
$$1 \ m = 100 \ cm$$
$$1 \ km = 1 \ 000 \ m$$
$$1 \ mi \approx 1.6 \ km$$
$$1 \ in \approx 2.54 \ cm$$
$$1 \ ft \approx 0.3 \ m$$
$$ft$$ = foot
$$in$$ = inch
$$yd$$ = yard
$$mi$$ = mile
$$m$$ = meter
$$mm$$ = millimeter
$$cm$$ = centimeter
$$km$$ = kilometer
Capacity/Volume
Equivalents
$$1 \ c = 8 \ fl \ oz$$
$$1 \ pt = 2 \ c$$
$$1 \ qt = 2 \ pt$$
$$1 \ gal = 4 \ qt$$
$$1 \ gal = 231 \ in^3$$
$$1 \ L = 1 \ 000 \ mL$$
$$1 \ L \approx 0.264 \ gal$$
$$c$$ = cup
$$fl \ oz$$ = fluid ounce
$$pt$$ = pint
$$qt$$ = quart
$$gal$$ = gallon
$$in^3$$ = cubic inch
$$L$$ = liter
$$mL$$ = milliliter
Weight/Mass
Equivalents
$$1 \ lb = 16 \ oz$$
$$1 \ t = 2 \ 000 \ lb$$
$$1 \ g = 1 \ 000 \ mg$$
$$1 \ kg = 1 \ 000 \ g$$
$$1 \ kg \approx 2.2 \ lb$$
$$1 \ oz \approx 28.3 \ g$$
$$lb$$ = pound
$$oz$$ = ounce
$$t$$ = ton
$$g$$ = gram
$$mg$$ = milligram
$$kg$$ = kilogram