1. GEOMETRY
REVIEW

2. In a right triangle, the shorter sides are called legs and the longest side (which is the one opposite the right angle) is called the hypotenuse
The Pythagorean Theorem relates the lengths of the sides. c
hypotenuse
c2 = a2 + b2
leg b
c2 = (3)2 + (4)2
leg a
c2 = = 25
c = 5
If one leg of a right triangle measures 3 inches and one leg measures 4 inches, how long is the hypotenuse?

3. Area = lw GEOMETRY FORMULAS For a rectangle Perimeter = P = 2l + 2w
Some formulas from geometry will be useful in algebra and trigonometry.
For a rectangle
Area = lw
w = width
l = length
Perimeter = P = 2l + 2w
This is distance around

4. Area = one half base times height
For a triangle
Area = one half base times height
height = h
base = b

5. Area = pi times radius squared
For a Circle
Area = pi times radius squared
radius = r
diameter = d
Circumference = 2 pi times radius or pi times diameter

6. V = lwh For a Rectangular Box Volume = length times width times height
h = height
V = lwh
w = width
l = length
Surface Area = 2 length times width (the top & bottom) length time height (the front & back) width times height (the sides)

7. For a Sphere Volume = 4/3 pi times the radius cubed
Surface Area = 4 pi times the radius squared

8. For a Right Circular Cylinder
Volume = pi times the radius squared times the height r h
Surface Area = 2 pi times the radius squared + 2 pi times the radius times the height