Math 8 Formulas

Question 1

Volume of a Cube

Answer 1

V=s^3;

s is the length of the side.

Question 2

Volume of a Cylinder

Answer 2

b x h OR (pi) (r^2) (h); b is base, h is height, pi is 3.14, r is radius.

Question 3

Volume of a Cone

Answer 3

(1/3) (b x h) OR (1/3) (pi) (r^2) (h); ; b is base, h is height, pi is 3.14, r is radius.

Question 4

The Pythagorean Theorem

Answer 4

a^2 + b^2 = c^2

Question 5

Find a Missing Leg Using the Pythagorean Theorem

Answer 5

a = sqrt (c^2 - b^2) OR b = sqrt (c^2 - a^2), sqrt means square root

Question 6

Distance Formula

Answer 6

Distance = sqrt [(y2 - y1) / (x2 - x1)]

Question 7

Volume of a Sphere

Answer 7

(4/3) (pi) (r^3)

Question 8

Slope Formula

Answer 8

(y2 - y1) / (x2 - x1)

Question 9

Slope-Intercept Form

Answer 9

y = mx + b, m is slope and b is y-intercept

Question 10

Standard Form

Answer 10

ax + by = c; a, b, and c are integers

Question 11

Inverse of Squaring a Number

Answer 11

Taking a Square Root sqrt

Question 12

Inverse of Taking a Square Root

Answer 12

Squaring a Number ^2

Question 13

Volume of a Rectangular Prism

Answer 13

V = (l)(w)(h); l is length, w is width, and h is height

Question 14

Area of a Circle

Answer 14

A = (pi)(r^2); r is radius

Question 15

Area of a Triangle

Answer 15

A = (1/2)(b)(h); b is base and h is height