Algebal review 9 pptx

5. Circumference is the distance around a circle.

If you uncurled this circle . . .

. . . you would have this line segment:

The circumference of the circle is the length of this line segment.

Formulas

The following formulas are provided on the SAT. You therefore do not need to memorize these formulas, but you

do need to understand when and how to use them.

Circle Rectangle Triangle

r

l

w

h

b

A = lw

C = 2πr

A = πr

2

Cylinder

Rectangle

Solid

h

l

V = πr

2h

w

r

h

V = lwh

C = Circumference

A = Area

r = Radius

l = Length

w = Width

h = Height

V = Volume

b = Base

A =1

2 bh

–GEOMETRY REVIEW–

134