Math ACT Prep

Area of a Circle

A = π r²

Circumference of a Circle

C = 2πr

Volume of a Rectangular Prism

V = area of base x h

Area of a Trapezoid

Area = (parallel side a + parallel side b) /2 x h

Volume of a Cube

V = s³, where s is the side length.

Volume of a Cylinder

V = π r² h

Surface area of a rectangular prim

S = 2(lw + lh + wh).

Surface area of a cube

S = 6s².

Surface area of a cylinder

S = 2π r² + 2π rh

Quadratic Formula

Sum of angles in an n-sided polygon

(n - 2)180°.

Properties of a 30-60-90 Triangle

Side lengths are in the ratio 1 : √3 : 2.

Area of a Sector

Area = (πr²) * (degree measure of arc / 360).

Length of an Arc

Length = (C) * (degree measure of arc / 360), where C is the circumference.

Area of a Parallelogram

Area = base x height.

Distance formula

D = √[(x₂ - x₁)² + (y₂ - y₁)²].

What is the center of a circle in vertex formula

(-h,-k)

Midpoint Formula

If the first day of the year is a Monday, what is the 260th day?

Monday

If you drive 60 miles at 90 miles an hour, how many minutes will the trip take you?

40 mnutes

What is the domain?

{x: 0 < x < 4}

What is the rule for exponents?

MADSPM
Multiply exponents – Add, Divide exponents – Subtract, Power – Multiply)

volume of a sphere

V = (4/3)πr³

what has perpendicular bisectors?

rhombus and parallelogram

x = log_b y

b^x = y