Geometry FormulasSection 2.14

Formulas Perimeter of a Triangle:

Area of a rectangle:

Volume of a box:

P a b c

A l w

V l w h

Examples

1.) Find the perimeter of a triangle with sides of length 3, 4, 5:

2.) Find the perimeter of a triangle with sides of length 2, 2, 3:

Examples1. Find the area of a rectangle with length 10 and width 12:

2. Find the area of a rectangle with length 3 and width 7:

Examples1.) Find the volume of a box with sides length of 6, 7, 8:

2.) Find the volume of a box with sides length of 3, 12, 14:

Classwork Pg 57 # 1-8

Wkst 2.6 B # 13-27, 31

Homework Pg 59 # 1-10, 17-25, 27, 28